10 Worst Mistakes in English: Spelling & Speaking Errors to Avoid

1. Introduction to the 10 Worst Mistakes

Making mistakes is part of learning, but some errors are so fundamental that they can damage your credibility in exams, job interviews, and professional communication. This lesson covers 10 of the worst mistakes in English—five spelling/grammar mistakes and five speaking mistakes.

Why These Mistakes Matter

Reason	Explanation
Exam failure	Basic errors lower IELTS/TOEFL/GRE scores.
Job interviews	Poor grammar creates a negative impression.
Sales and clients	Mistakes can cost you business.
Presentations	Errors undermine your authority.
Reputation	Repeated mistakes harm your professional image.

The 10 Mistakes at a Glance

#	Category	Mistake
1	Spelling/Grammar	Your vs. You’re
2	Spelling/Grammar	Who’s vs. Whose
3	Spelling/Grammar	It’s vs. Its
4	Spelling/Grammar	There / Their / They’re
5	Spelling/Grammar	Lose vs. Loose
6	Speaking	Good vs. Well
7	Speaking	Do vs. Make
8	Speaking	Prepositions of time: at, on, in
9	Speaking	Subject vs. Object pronouns
10	Speaking	Stative verbs: Have

Word Meaning Section

Word / Phrase	English Meaning	Bengali Meaning
Mistake	an error	ভুল
Credibility	trustworthiness	বিশ্বাসযোগ্যতা
Professional	related to work	পেশাদার
Reputation	public opinion	সুনাম
Fundamental	basic	মৌলিক

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2. Mistake 1: Your vs. You’re

The Error

“Your” and “you’re” sound the same but have different meanings and spellings.

Correct Spelling	Incorrect Spelling
You’re late.	Your late.

Why It’s Wrong

• You’re is a contraction of you are.
• Your is a possessive adjective meaning something belongs to you.

8 Examples with Explanations

#	Sentence	Correct/Incorrect	Explanation
1	Your book is on the table.	Correct	Possessive: the book belongs to you.
2	You’re going to love this.	Correct	Contraction: you are going to love this.
3	Your late for the meeting.	Incorrect	Should be “You’re late.”
4	I saw you’re brother yesterday.	Incorrect	Should be “your brother.”
5	You’re a great friend.	Correct	You are a great friend.
6	Is this your phone?	Correct	Possessive.
7	Your welcome.	Incorrect	Should be “You’re welcome.”
8	You’re the best!	Correct	You are the best.
9	Your hair looks nice.	Correct	Possessive.
10	I think you’re right.	Correct	You are right.

Word Meaning Section

Word / Phrase	English Meaning	Bengali Meaning
You’re	you are (contraction)	তুমি আছ / আপনি আছেন
Your	belonging to you	তোমার / আপনার
Contraction	a shortened form of words	সংক্ষিপ্ত রূপ
Possessive adjective	shows ownership	সম্বন্ধসূচক বিশেষণ

Related Phrasal Verb

Phrasal Verb	Meaning	Example
You’re in for	You will experience	You’re in for a surprise.
You’re up to	You are doing	What are you up to?

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3. Mistake 2: Who’s vs. Whose

The Error

“Who’s” and “whose” sound identical but are used differently.

Correct	Incorrect
Who’s that?	Whose that?

Why It’s Wrong

• Who’s is a contraction of who is or who has.
• Whose is a possessive pronoun asking about ownership.

8 Examples with Explanations

#	Sentence	Correct/Incorrect	Explanation
1	Who’s coming to dinner?	Correct	Who is coming?
2	Whose jacket is this?	Correct	Who does the jacket belong to?
3	Who’s been to Paris?	Correct	Who has been?
4	Whose going to the party?	Incorrect	Should be “Who’s going.”
5	I don’t know whose car that is.	Correct	Possession.
6	Who’s the manager?	Correct	Who is the manager?
7	The woman whose son won is happy.	Correct	Possessive relative.
8	Whose responsible?	Incorrect	Should be “Who’s responsible.”
9	Who’s ready?	Correct	Who is ready?
10	She asked whose book was lost.	Correct	Ownership.

Word Meaning Section

Word / Phrase	English Meaning	Bengali Meaning
Who’s	who is / who has	কে আছ / কে হয়েছে
Whose	belonging to whom	কার
Contraction	shortened form	সংক্ষিপ্ত রূপ
Possessive pronoun	shows ownership	সম্বন্ধসূচক সর্বনাম

Related Phrasal Verb

Phrasal Verb	Meaning	Example
Find out	discover	Who’s going to find out the answer?
Whose side are you on?	Who do you support?	Not a phrasal verb, but common phrase.

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4. Mistake 3: It’s vs. Its

The Error

“It’s” and “its” are often confused in writing.

Correct	Incorrect
It’s time to go.	Its time to go.

Why It’s Wrong

• It’s is a contraction of it is or it has.
• Its is a possessive adjective meaning belonging to it.

8 Examples with Explanations

#	Sentence	Correct/Incorrect	Explanation
1	It’s raining outside.	Correct	It is raining.
2	The dog wagged its tail.	Correct	The tail belongs to the dog.
3	Its a beautiful day.	Incorrect	Should be “It’s a beautiful day.”
4	The company changed its logo.	Correct	The logo belongs to the company.
5	It’s been a long time.	Correct	It has been.
6	Its important to study.	Incorrect	Should be “It’s important.”
7	The car has its own problems.	Correct	Ownership.
8	It’s my book.	Correct	It is my book.
9	The baby opened its eyes.	Correct	Belonging to the baby.
10	Its going to snow.	Incorrect	Should be “It’s going to snow.”

Word Meaning Section

Word / Phrase	English Meaning	Bengali Meaning
It’s	it is / it has	এটা হয় / এটা করেছে
Its	belonging to it	এর (জড়বাচক)
Contraction	shortened form	সংক্ষিপ্ত রূপ
Possessive	showing ownership	সম্বন্ধসূচক

Related Phrasal Verb

Phrasal Verb	Meaning	Example
It’s up to	It is your responsibility	It’s up to you to decide.
It’s about	It is concerning	It’s about time we left.

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5. Mistake 4: There / Their / They’re

The Error

These three words sound the same but have different spellings and meanings.

Correct	Incorrect
They’re here.	There here. / Their here.

Why It’s Wrong

• They’re = contraction of they are.
• There = location, opposite of here.
• Their = possessive adjective, belonging to them.

8 Examples with Explanations

#	Sentence	Correct/Incorrect	Explanation
1	They’re coming to visit.	Correct	They are coming.
2	Their house is big.	Correct	The house belongs to them.
3	Put the book over there.	Correct	Location.
4	There going to be late.	Incorrect	Should be “They’re going.”
5	Their planning a trip.	Incorrect	Should be “They’re planning.”
6	Is there any milk?	Correct	Existence/location.
7	They’re happy with the result.	Correct	They are happy.
8	Their car broke down.	Correct	The car belongs to them.
9	Look over their.	Incorrect	Should be “look over there.”
10	There are many options.	Correct	Existence.

Word Meaning Section

Word / Phrase	English Meaning	Bengali Meaning
They’re	they are	তারা আছেন / তারা হন
There	in that place	সেখানে
Their	belonging to them	তাদের
Contraction	shortened form	সংক্ষিপ্ত রূপ
Possessive	showing ownership	সম্বন্ধসূচক

Related Phrasal Verb

Phrasal Verb	Meaning	Example
There you go	Here it is	There you go, your coffee.
There’s no point	It is useless	There’s no point arguing.

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6. Mistake 5: Lose vs. Loose

The Error

“Lose” and “loose” are often confused in writing and sometimes in pronunciation.

Correct	Incorrect
Did you lose this?	Did you loose this?

Why It’s Wrong

• Lose (verb) = to misplace, fail to win, or not have anymore.
• Loose (adjective) = not tight; free.

8 Examples with Explanations

#	Sentence	Correct/Incorrect	Explanation
1	Don’t lose your keys.	Correct	Misplace.
2	These pants are too loose.	Correct	Not tight.
3	I think I’m losing my mind.	Correct	Losing control.
4	The shirt is lose.	Incorrect	Should be “loose.”
5	They lost the game.	Correct	Failed to win.
6	The screw is loose.	Correct	Not tight.
7	Did you loose your phone?	Incorrect	Should be “lose.”
8	He has a loose tooth.	Correct	Not fixed.
9	We will lose money if we cancel.	Correct	Not gain.
10	The dog got loose.	Correct	Free.

Word Meaning Section

Word / Phrase	English Meaning	Bengali Meaning
Lose	to misplace or fail	হারানো
Loose	not tight; free	ঢিলা; মুক্ত
Verb	action word	ক্রিয়া
Adjective	describing word	বিশেষণ

Related Phrasal Verb

Phrasal Verb	Meaning	Example
Lose out on	miss an opportunity	Don’t lose out on this chance.
Let loose	release; behave freely	Let loose and enjoy the party.

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7. Mistake 6: Good vs. Well

The Error

Using “good” when “well” is required (or vice versa) in speech.

Correct	Incorrect
You speak English well.	You speak English good.

Why It’s Wrong

• Good is an adjective; it modifies nouns.
• Well is an adverb; it modifies verbs (how you do something).

8 Examples with Explanations

#	Sentence	Correct/Incorrect	Explanation
1	She is a good singer.	Correct	Good modifies noun “singer.”
2	She sings well.	Correct	Well modifies verb “sings.”
3	He did good on the test.	Incorrect	Should be “did well.”
4	That’s a good idea.	Correct	Adjective + noun.
5	The team played well today.	Correct	Adverb modifying “played.”
6	I feel good today.	Correct	“Good” is an adjective describing state. (Also “well” for health.)
7	You write very good.	Incorrect	Should be “write well.”
8	She speaks good English.	Correct	Good + noun “English.”
9	He drives good.	Incorrect	Should be “drives well.”
10	The food smells good.	Correct	Adjective after sense verb.

Word Meaning Section

Word / Phrase	English Meaning	Bengali Meaning
Good	of high quality (adjective)	ভালো
Well	in a good way (adverb)	ভালভাবে
Adjective	describes noun	বিশেষণ
Adverb	describes verb	ক্রিয়াবিশেষণ

Related Phrasal Verb

Phrasal Verb	Meaning	Example
Do well	succeed	She did well in her exams.
Be good at	skilled in	He is good at math.

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8. Mistake 7: Do vs. Make

The Error

Using “make” instead of “do” (or vice versa) in fixed expressions.

Correct	Incorrect
He’s doing his homework.	He’s making his homework.

Why It’s Wrong

• Do is used for work, tasks, and general activities.
• Make is used for creating or producing something.
• Some expressions are fixed and must be memorized.

8 Examples with Explanations

#	Sentence	Correct/Incorrect	Explanation
1	I need to do the dishes.	Correct	Household task.
2	She made a cake.	Correct	Created something.
3	He’s making his bed.	Correct	Creating order.
4	Did you do your homework?	Correct	Task.
5	I made a mistake.	Correct	Created an error.
6	We did a lot of work.	Correct	General activity.
7	She’s making dinner.	Correct	Creating food.
8	He did the laundry.	Correct	Task.
9	They made a decision.	Correct	Created a decision.
10	I have to do a presentation.	Correct	Task.

Common Expressions with “Do”

Expression	Meaning
do the dishes	wash dishes
do the laundry	wash clothes
do homework	complete schoolwork
do a favor	help someone
do business	engage in commerce
do your best	try hard

Common Expressions with “Make”

Expression	Meaning
make a mistake	create an error
make a decision	decide
make a cake	bake a cake
make a plan	create a plan
make money	earn money
make a difference	have an impact

Word Meaning Section

Word / Phrase	English Meaning	Bengali Meaning
Do	perform an action or task	করা
Make	create or produce	তৈরি করা
Expression	fixed phrase	অভিব্যক্তি
Collocation	natural word combination	শব্দের স্বাভাবিক সংমিশ্রণ

Related Phrasal Verb

Phrasal Verb	Meaning	Example
Do over	redo	I need to do over the report.
Make up	invent; reconcile	She made up a story. They made up after the fight.
Do away with	eliminate	We should do away with old rules.

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9. Mistake 8: Prepositions of Time: At, On, In

The Error

Using the wrong preposition for time expressions.

Correct	Incorrect
I’ll see you at 6:30.	I’ll see you on 6:30. / I’ll see you in 6:30.

The Triangle Method

Preposition	Used For	Example
at	precise times	at 6:00, at midnight, at noon
on	one day or one date	on Monday, on July 4th
in	long periods	in July, in 2020, in the 1990s

8 Examples with Explanations

#	Sentence	Correct/Incorrect	Explanation
1	The meeting is at 3:00.	Correct	Specific time.
2	I work on Mondays.	Correct	Day.
3	She was born in 2005.	Correct	Year.
4	We travel in July.	Correct	Month.
5	See you at noon.	Correct	Precise time.
6	I’ll call you on Friday.	Correct	Day.
7	They’re getting married on March 9th.	Correct	Date.
8	I exercise in the morning.	Correct	Part of day.
9	We’ll meet in Monday.	Incorrect	Should be “on Monday.”
10	The party is at Saturday.	Incorrect	Should be “on Saturday.”

British and American Differences

Expression	American	British
Weekend	on the weekend	at the weekend

Word Meaning Section

Word / Phrase	English Meaning	Bengali Meaning
At	precise time	নির্দিষ্ট সময়ে
On	day or date	দিনে বা তারিখে
In	long period	দীর্ঘ সময়ে
Noon	12 p.m.	দুপুর
Midnight	12 a.m.	মধ্যরাত
Decade	10 years	দশক
Century	100 years	শতাব্দী

Related Phrasal Verb

No phrasal verbs directly, but common expressions:

Phrase	Meaning	Example
In time	before deadline	We arrived in time.
On time	exactly at planned time	She came on time.
At the last minute	just before	He submitted at the last minute.

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10. Mistake 9: Subject Pronouns vs. Object Pronouns

The Error

Using an object pronoun as part of a compound subject.

Correct	Incorrect
He and I are getting married.	Him and I are getting married.

Why It’s Wrong

• Subject pronouns (I, he, she, we, they) do the action.
• Object pronouns (me, him, her, us, them) receive the action.

8 Examples with Explanations

#	Sentence	Correct/Incorrect	Explanation
1	She and I went shopping.	Correct	Subject pronouns.
2	The teacher praised him and me.	Correct	Object pronouns.
3	Me and John are friends.	Incorrect	Should be “John and I.”
4	Her and me went to the mall.	Incorrect	Should be “She and I.”
5	They invited my brother and me.	Correct	Object.
6	Us are leaving now.	Incorrect	Should be “We are leaving.”
7	Him and I are classmates.	Incorrect	Should be “He and I.”
8	The gift is for you and me.	Correct	Object after preposition.
9	Me went home early.	Incorrect	Should be “I went home.”
10	They and I agreed.	Correct	Subject pronouns.

Word Meaning Section

Word / Phrase	English Meaning	Bengali Meaning
Subject pronoun	pronoun that does the action	কর্তা সর্বনাম
Object pronoun	pronoun that receives the action	কর্ম সর্বনাম
Compound subject	two or more subjects	যৌগিক কর্তা
Preposition	word before a noun	পদান্বয়ী অব্যয়

Related Phrasal Verb

Phrasal Verb	Meaning	Example
Team up with	join with	He teamed up with me for the project.
Get along with	have good relationship	She gets along with him.

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11. Mistake 10: Stative Verbs: Have

The Error

Using stative verbs in continuous form incorrectly.

Correct	Incorrect
He has a cool car.	He’s having a cool car.

Why It’s Wrong

• Stative verbs describe states, not actions.
• They are not usually used in continuous tenses.
• Have (possession) is stative; having can be used for experiences or events, e.g., “having a party,” “having fun.”

8 Examples with Explanations

#	Sentence	Correct/Incorrect	Explanation
1	She has two brothers.	Correct	Possession.
2	They are having dinner.	Correct	Action/event.
3	I’m having a hard time.	Correct	Experience.
4	He is having a car.	Incorrect	Should be “He has a car.”
5	We have a meeting.	Correct	Scheduled event.
6	She is having a baby.	Correct	Giving birth.
7	They have a house.	Correct	Possession.
8	I’m having a shower.	Correct	Action.
9	He is having a headache.	Incorrect	Should be “He has a headache.”
10	We have fun.	Correct	Experience (also “We are having fun”).

Common Stative Verbs

Category	Examples
Emotions	love, hate, like, prefer
Mind	know, believe, understand, remember
Possession	have, own, belong
Senses	see, hear, smell, taste, feel
Other	cost, seem, need

Word Meaning Section

Word / Phrase	English Meaning	Bengali Meaning
Stative verb	describes a state	অবস্থাবাচক ক্রিয়া
Dynamic verb	describes an action	ক্রিয়াবাচক ক্রিয়া
Possession	ownership	মালিকানা
Continuous tense	-ing form	ঘটমান কাল
State	condition	অবস্থা

Related Phrasal Verb

Phrasal Verb	Meaning	Example
Have on	wear	She has a coat on.
Have over	invite to home	We had friends over.

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12. Grammar Focus: Patterns Behind the Mistakes

Understanding the underlying grammar patterns helps avoid these mistakes permanently.

Homonyms and Contractions

Many of the spelling mistakes involve homonyms—words that sound alike but have different meanings and spellings.

Category	Examples
Contractions	you’re, who’s, it’s, they’re
Possessives	your, whose, its, their
Other	there, lose/loose

Contraction Pattern

Full Form	Contraction
you are	you’re
who is / who has	who’s
it is / it has	it’s
they are	they’re

Possessive Pattern

Pronoun	Possessive Adjective
you	your
who	whose
it	its
they	their

Parts of Speech Pattern

Part of Speech	Example
Adjective	good, loose
Adverb	well
Verb	lose, do, make, have
Preposition	at, on, in
Pronoun (subject)	I, he, she, we, they
Pronoun (object)	me, him, her, us, them

Sentence Formulas

Subject Pronouns in Compound Subjects

Subject pronoun + and + subject pronoun + verb

Correct Formula	Example
He + and + I + verb	He and I are friends.
She + and + I + verb	She and I went shopping.

Prepositions of Time

At + precise time
On + day/date
In + long period

Formula	Example
At + time	at 6:00
On + day	on Monday
In + month/year	in July, in 2020

Stative Verbs (No Continuous)

Subject + stative verb (simple form) + object

Correct	Incorrect
I have a car.	I am having a car.
She knows him.	She is knowing him.

Affirmative, Negative, and Interrogative Forms

Form	Example (subject-verb agreement)
Affirmative	You’re right.
Negative	You aren’t right.
Interrogative	Are you right?
Affirmative	She has a car.
Negative	She doesn’t have a car.
Interrogative	Does she have a car?
Affirmative	I do my homework.
Negative	I don’t do my homework.
Interrogative	Do I do my homework?

5 WH-Question Examples with Answers

#	WH Question	Possible Answer
1	Who’s the manager?	He’s the manager.
2	Whose book is this?	It’s my book.
3	When is the meeting?	It’s at 3:00.
4	What are you doing?	I’m doing my homework.
5	Why is she tired?	She worked all day.

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13. Sentence Patterns for Correct Usage

Pattern 1: Contraction + Complement

Contraction (you’re, it’s, who’s, they’re) + adjective/noun

Example
You’re late.
It’s time to go.
They’re here.
Who’s that?

Pattern 2: Possessive + Noun

Possessive adjective (your, its, their, whose) + noun

Example
Your book is here.
Its color is red.
Their house is big.
Whose car is this?

Pattern 3: Subject + Verb + Object

Example
I did my homework.
She made a cake.
We have a plan.
He lost his keys.

Pattern 4: Subject + Be + Adjective/Adverb

Example
The pants are loose.
She sings well.
He is a good singer.
It feels good.

Pattern 5: Preposition + Time Expression

Example
I’ll see you at noon.
We work on Fridays.
It snows in winter.

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14. Special Tips for Learners

Tip 1: Proofread for Homonyms

Always check your writing for words that sound the same but have different spellings.

Tip 2: Expand Contractions

If unsure, expand the contraction to check meaning:

You’re late → You are late ✅
Your late → You are late ❌

Tip 3: Use the Triangle for Time

Draw the triangle: at top, on middle, in bottom. It helps recall.

Tip 4: Memorize Do/Make Expressions

Create flashcards for common “do” and “make” collocations.

Tip 5: Learn Stative Verbs List

Keep a list of stative verbs and remember they don’t take continuous form.

Tip 6: Check Subject-Verb Agreement

For compound subjects, test by removing the other person:

He and I are going. → I am going. ✅
Him and I are going. → Him is going. ❌

Tip 7: Practice with Real Sentences

Write your own examples for each mistake.

Tip 8: Read Aloud

Reading correct sentences aloud reinforces correct patterns.

Tip 9: Use Spaced Repetition

Review these mistakes after one day, one week, one month.

Tip 10: Get Feedback

Ask a teacher or native speaker to check your speaking and writing.

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15. Tips for Competitive Exams: IELTS, TOEFL, GRE

IELTS

Skill	How It Is Tested	Strategy
Writing Task 2	Spelling and grammar accuracy	Avoid homonym errors; use correct prepositions.
Speaking	Grammatical range and accuracy	Use subject/object pronouns correctly; avoid stative continuous.
Listening	Understanding contractions and homonyms	Train ear for context.

TOEFL

Skill	How It Is Tested	Strategy
Writing	Integrated and independent essays	Avoid common errors; use varied sentence structures.
Speaking	Accuracy and fluency	Use correct pronouns, prepositions, and verb forms.

GRE

Skill	How It Is Tested	Strategy
Analytical Writing	Precise language and grammar	Avoid all ten mistakes; demonstrate standard written English.
Text Completion	Vocabulary and grammar in context	Know do/make collocations, stative verbs.

Exam Rules

• In writing, always expand contractions mentally to check spelling.
• In speaking, use “well” as adverb, “good” as adjective.
• Use “at/on/in” correctly for time.
• Use subject pronouns in compound subjects.
• Avoid using stative verbs in continuous form.

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16. Practice Exercises

Exercise 1: Fill in the Blanks

Choose the correct word from the pair in brackets.

1. ______ late for work again. (Your / You’re)
2. ______ jacket is this? (Who’s / Whose)
3. ______ time to leave. (It’s / Its)
4. ______ coming to the party. (There / They’re / Their)
5. Did you ______ your phone? (lose / loose)
6. She sings very ______. (good / well)
7. I need to ______ my homework. (do / make)
8. We’ll meet ______ noon. (at / on / in)
9. ______ and I are colleagues. (Him / He)
10. He ______ a new car. (has / is having)

Exercise 2: Multiple Choice Questions

Choose the correct sentence.

1. Which sentence is correct?
   a) Your going to love this.
   b) You’re going to love this.
   c) Your going to love this?
   d) You’re going love this.
2. Which sentence is correct?
   a) Who’s bag is this?
   b) Whose bag is this?
   c) Who’s bag is this?
   d) Whose bag is this.
3. Which sentence is correct?
   a) Its a nice day.
   b) It’s a nice day.
   c) Its a nice day.
   d) It’s nice day.
4. Which sentence is correct?
   a) There going to be late.
   b) Their going to be late.
   c) They’re going to be late.
   d) They’re going be late.
5. Which sentence is correct?
   a) The shirt is lose.
   b) The shirt is loose.
   c) The shirt is losed.
   d) The shirt is lost.
6. Which sentence is correct?
   a) He speaks English good.
   b) He speaks English well.
   c) He speaks good English.
   d) Both b and c.
7. Which sentence is correct?
   a) He’s doing his homework.
   b) He’s making his homework.
   c) He’s doing his homeworks.
   d) He’s making his homeworks.
8. Which sentence is correct?
   a) I’ll see you in 6:30.
   b) I’ll see you on 6:30.
   c) I’ll see you at 6:30.
   d) I’ll see you to 6:30.
9. Which sentence is correct?
   a) Me and John are friends.
   b) John and I are friends.
   c) John and me are friends.
   d) I and John are friends.
10. Which sentence is correct?
    a) She is having a car.
    b) She has a car.
    c) She have a car.
    d) She is have a car.

Exercise 3: Sentence Transformation / Error Correction

Rewrite each sentence correctly.

1. Your welcome to join us.
2. Whose going to the meeting?
3. Its raining outside.
4. There waiting for us.
5. Did you loose your keys?
6. He plays piano very good.
7. I have to make my homework.
8. The concert is on Friday at 8:00. (Correct as is; change to “in Friday” to test) → Change “in Friday” to “on Friday”.
9. Him and me are leaving early.
10. She is knowing the answer.

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17. Answer Key with Explanations

Exercise 1 Answers

1. You’re
   Explanation: You’re = you are.
2. Whose
   Explanation: Whose = belonging to whom.
3. It’s
   Explanation: It’s = it is.
4. They’re
   Explanation: They’re = they are.
5. lose
   Explanation: Lose = misplace.
6. well
   Explanation: Well = adverb modifying sings.
7. do
   Explanation: Fixed expression “do homework.”
8. at
   Explanation: Noon is a precise time.
9. He
   Explanation: Subject pronoun needed.
10. has
    Explanation: Stative verb, simple present.

Exercise 2 Answers

1. b) You’re going to love this.
   Explanation: Contraction “you’re.”
2. b) Whose bag is this?
   Explanation: Possessive “whose.”
3. b) It’s a nice day.
   Explanation: “It’s” = it is.
4. c) They’re going to be late.
   Explanation: Contraction “they’re.”
5. b) The shirt is loose.
   Explanation: “Loose” = not tight.
6. d) Both b and c.
   Explanation: “speaks well” (adverb) and “speaks good English” (adjective + noun) are both correct.
7. a) He’s doing his homework.
   Explanation: “Do homework” is fixed.
8. c) I’ll see you at 6:30.
   Explanation: Specific time uses “at.”
9. b) John and I are friends.
   Explanation: Subject pronoun “I,” and “I” comes last.
10. b) She has a car.
    Explanation: Stative “have” in simple present.

Exercise 3 Answers

1. You’re welcome to join us.
   Explanation: “You’re” = you are.
2. Who’s going to the meeting?
   Explanation: “Who’s” = who is.
3. It’s raining outside.
   Explanation: “It’s” = it is.
4. They’re waiting for us.
   Explanation: “They’re” = they are.
5. Did you lose your keys?
   Explanation: “Lose” is the verb.
6. He plays piano very well.
   Explanation: “Well” is the adverb.
7. I have to do my homework.
   Explanation: “Do homework” fixed.
8. The concert is on Friday at 8:00.
   Explanation: Day uses “on.”
9. He and I are leaving early.
   Explanation: Subject pronouns “he” and “I.”
10. She knows the answer.
    Explanation: “Know” is stative; simple present.

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18. Conclusion

Avoiding these 10 worst mistakes will significantly improve the quality of your English. By understanding the difference between homonyms, using correct parts of speech, and mastering tricky grammar points like prepositions, pronouns, and stative verbs, you can communicate with confidence and professionalism.

Key points to remember:

• Spelling: Know your contractions vs. possessives (your/you’re, it’s/its, they’re/their/there, who’s/whose, lose/loose).
• Speaking: Use “well” as an adverb, memorize do/make collocations, use prepositions of time correctly, choose subject pronouns in subjects, and avoid continuous forms with stative verbs.
• Practice: Use the exercises and review regularly.

By focusing on these common errors, you will avoid embarrassing mistakes and achieve higher scores in exams like IELTS, TOEFL, and GRE, as well as greater success in your professional life.

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Call to Action: Review your recent writing and speaking. Identify three mistakes from this list and correct them. Write five new sentences using the correct forms. Then, explain the rule to a friend or study partner—teaching is the best way to master these rules. Finally, create a checklist of these 10 mistakes and proofread your next email or essay against it.