Definition: Words are categorized into parts of speech based on their function in a sentence. There are 8 main types.
Part of Speech
Function
Example
Noun
Names person, place, thing
teacher, city, book
Pronoun
Replaces a noun
he, she, they, it
Verb
Shows action or state
run, is, think
Adjective
Describes a noun
happy, blue, tall
Adverb
Describes verb/adj/adv
quickly, very, well
Preposition
Shows relationship
in, on, at, under
Conjunction
Joins words/clauses
and, but, because
Interjection
Expresses emotion
Wow! Oh! Hey!
Examples:
The quick (adj) brown fox (n) jumps (v) quickly (adv) over (prep) the lazy dog.
Wow! (interj) She (pronoun) and (conj) I went to the park.
He is a very (adv) talented (adj) musician (n).
Practice Questions
1. Identify the parts of speech in: "She quickly wrote an excellent essay."
She (pronoun), quickly (adverb), wrote (verb), an (article/determiner), excellent (adjective), essay (noun)
2. Which word is an adverb? "They spoke softly during the movie."
"softly" is the adverb - it describes how they spoke
2. Tenses (All 12)
Key Concept: English has 3 times (Past, Present, Future) × 4 aspects (Simple, Continuous, Perfect, Perfect Continuous) = 12 tenses.
Present Tenses
Tense
Structure
Use
Example
Present Simple
base / base+s
Habits, facts
I work. He works.
Present Continuous
am/is/are + V-ing
Now, temporary
She is working.
Present Perfect
has/have + V3
Past to present
We have finished.
Present Perfect Cont.
has/have been + V-ing
Duration to present
I've been waiting.
Past & Future Tenses
Tense
Structure
Example
Past Simple
V2
I worked yesterday.
Past Continuous
was/were + V-ing
She was working at 5pm.
Past Perfect
had + V3
We had finished before he came.
Past Perfect Cont.
had been + V-ing
I had been waiting for hours.
Future Simple
will + base
They will arrive soon.
Future Continuous
will be + V-ing
I'll be working at 8pm.
Future Perfect
will have + V3
She'll have finished by 6pm.
Future Perfect Cont.
will have been + V-ing
I'll have been studying for 3 hours.
Practice Questions
1. Choose correct tense: "By next year, I _____ (live) here for a decade."
will have been living - Future Perfect Continuous for duration up to a point in future
2. "She _____ (study) when I called her." What tense fits?
was studying - Past Continuous for action in progress when interrupted
3. Subject-Verb Agreement
Core Rule: A singular subject takes a singular verb. A plural subject takes a plural verb.
Key Rules
Basic: He plays tennis. They play tennis.
Each/Every/Everyone: Singular. Every student has a book.
Either...or / Neither...nor: Verb agrees with closest subject. Either Tom or his friends are coming.
Collective nouns: Usually singular in AmE. The team is winning.
Indefinite amounts: Ten dollars is too much. Five miles is far.
Phrases between subject & verb don't change agreement: The box of apples is heavy.
Tricky cases: "There is/are", "a number of" (plural), "the number of" (singular)
Examples:
The news is good today. (Uncountable - singular)
Mathematics is my favorite subject.
A number of students are absent. / The number of students is 30.
Practice Questions
1. Everyone in the class _____ (has/have) submitted the assignment.
has - "Everyone" is always singular
2. The list of items _____ (is/are) on the desk.
is - The subject is "list" (singular), not "items"
4. Articles: a / an / the
Indefinite Articles: a / an
Use a/an for singular, countable nouns when mentioning for the first time or when not specific.
a + consonant sound | an + vowel sound
a book, a university (yoo-sound), a one-time event
an apple, an hour (h is silent), an MBA (em-sound)
Definite Article: the
Use the when the noun is specific, unique, or already mentioned. Also with superlatives, ordinals, and some proper nouns.
The sun, the internet, the best student
The United States, the Pacific Ocean, the Eiffel Tower
I saw a dog. The dog was barking.
Zero Article (no article)
No article with: general plural/uncountable nouns, names of people/countries, days/months, meals, languages, school subjects.
Examples:
Dogs are loyal. Water is essential. Love is important.
She lives in Canada. He speaks French. We eat breakfast at 8.
But: The dogs in my street are noisy. (specific dogs)
Practice Questions
1. Fill in: He is ___ honest man from ___ UK.
an honest man from the UK (h is silent in honest; UK is specific country group)
2. Which is correct: "I love the music" or "I love music" for music in general?
"I love music" - no article for general uncountable nouns. "The music" = specific music
5. Prepositions of Time & Place
Prepositions of Time: at / on / in
Prep
Use
Examples
at
Specific times, holidays
at 5pm, at noon, at night, at Christmas
on
Days, dates
on Monday, on July 4th, on my birthday
in
Months, years, periods
in June, in 2024, in the morning, in winter
Prepositions of Place: at / on / in
Prep
Use
Examples
at
Point, specific address
at the bus stop, at 123 Main St, at home
on
Surface, street
on the table, on the wall, on Oxford Street
in
Enclosed space, area
in the box, in London, in the car, in bed
Important exceptions: in the morning/afternoon/evening BUT at night. on the train/bus/plane BUT in a car/taxi.
More Examples:
I'll meet you at 3pm on Friday in July.
She's in her office at work, on the second floor.
We arrived in Paris at the airport on time.
Practice Questions
1. Choose: Meet me ___ the library ___ 4pm ___ Tuesday.
at the library, at 4pm, on Tuesday
2. "in" or "at": I was born ___ 1998 ___ New York.
in 1998, in New York (or "at hospital" if specific point)
6. Conditionals 0-3 + Mixed
Conditionals express if-then relationships. The condition is in the if-clause.
Type
Structure
Use
Zero
If + Present Simple, Present Simple
General truths, facts
First
If + Present Simple, will + base
Real future possibility
Second
If + Past Simple, would + base
Unreal present/future
Third
If + Past Perfect, would have + V3
Unreal past
Mixed
If + Past Perfect, would + base
Past condition, present result
Examples:
Zero: If you heat water to 100°C, it boils.
First: If it rains tomorrow, we will stay home.
Second: If I won the lottery, I would travel the world.
Third: If I had studied harder, I would have passed the exam.
Mixed: If I had taken that job, I would be rich now.
Note: Use "were" for all persons in 2nd conditional: If I were you, I'd apologize.
Practice Questions
1. Complete 3rd conditional: If she _____ (know) earlier, she _____ (come).
If she had known earlier, she would have come.
2. Which type: "If I were a bird, I would fly south."?
Second Conditional - unreal/imaginary present situation
7. Active vs Passive Voice
Active: Subject does the action. Passive: Subject receives the action.
Passive = be + past participle (V3). Use when actor is unknown/unimportant or you want focus on action.
Form Changes
Tense
Active
Passive
Present Simple
They make cars.
Cars are made.
Past Simple
She wrote the book.
The book was written.
Present Continuous
They are building it.
It is being built.
Present Perfect
He has finished it.
It has been finished.
Future Simple
We will deliver it.
It will be delivered.
When to use Passive:
Actor unknown: My wallet was stolen. (by someone)
Actor unimportant: The road is being repaired.
Formal/scientific: The experiment was conducted in 2020.
Focus on object: America was discovered in 1492.
Practice Questions
1. Change to passive: "The company will launch a new product next month."
A new product will be launched by the company next month.
2. Change to active: "The cake was eaten by the children."
The children ate the cake.
8. Reported Speech
Reported Speech = telling what someone said without quoting exactly. Usually backshift tenses if reporting verb is past.
Tense Changes (Backshift)
Direct Speech
Reported Speech
Present Simple →
Past Simple
Present Continuous →
Past Continuous
Past Simple →
Past Perfect
Present Perfect →
Past Perfect
will →
would
can →
could
Other Changes
Pronouns: I → he/she, my → his/her, we → they
Time/Place: now → then, today → that day, tomorrow → the next day, here → there
Questions: Use if/whether for yes/no. No question order. "Are you OK?" → She asked if I was OK.
Commands: Use to/not to. "Don't touch!" → He told me not to touch.
Examples:
Direct: "I am tired," she said. → Reported: She said that she was tired.
Direct: "We will come tomorrow," they said. → Reported: They said they would come the next day.
Direct: "Where do you live?" → She asked me where I lived.
Practice Questions
1. Report: Tom said, "I have never been to Paris."
Tom said that he had never been to Paris.
2. Report: "Can you help me?" she asked him.
She asked him if/whether he could help her.
9. Modal Verbs
Modals add meaning to main verbs: ability, permission, obligation, possibility. Structure: modal + base verb (no -s, -ing, to).
Modal
Uses
Example
can/could
Ability, permission, request
I can swim. Could you help?
may/might
Possibility, permission
It may rain. May I come in?
must
Obligation, deduction
You must stop. He must be tired.
have to
External obligation
I have to wear a uniform.
should
Advice, expectation
You should rest. It should arrive soon.
would
Polite request, hypothetical
Would you mind? I would go if...
shall
Offer, suggestion (formal)
Shall we begin?
Perfect Modals
modal + have + V3 = past meaning. must have = strong past deduction, should have = past advice/regret, could have = past possibility
Examples:
She must have been here. (I'm sure she was)
You should have called. (but you didn't)
They might have left already. (possible)
I could have helped if I had known. (but I didn't)
Practice Questions
1. Which modal shows obligation: "You _____ wear a seatbelt."?
must / have to - both show obligation. "must" is stronger/more personal
2. "He _____ left. His car is gone." What modal fits for deduction?
must have - strong logical deduction about the past
10. Punctuation Rules
Essential Marks
Mark
Name
Main Use
Example
.
Period
End statements
She went home.
,
Comma
Lists, clauses, intro phrases
After dinner, we left.
;
Semicolon
Join related independent clauses
I came; he left.
:
Colon
Introduce list/explanation
Bring: pen, paper, book.
'
Apostrophe
Possessive, contraction
John's car, don't
""
Quotation marks
Direct speech, quotes
She said, "Hello."
?
Question mark
End questions
Are you coming?
!
Exclamation
Strong emotion
What a day!
Key Comma Rules
Lists: I need apples, oranges, and bananas. (Oxford comma optional but clearer)
Compound sentences: I called, but no one answered.
Intro phrases: After the movie, we went home.
Non-essential info: My brother, who lives in Paris, is visiting.
Direct address: Let's eat, Grandma!
Common errors: its (possessive) vs it's (it is), your vs you're, their/there/they're. Don't use commas to join sentences without a conjunction = comma splice.
Practice Questions
1. Add punctuation: Lets eat grandma
Let's eat, Grandma! - Without comma it means to eat grandmother!
2. Correct: Its a beautiful day but its going to rain.
It's a beautiful day, but it's going to rain. (both are "it is")
11. Common Grammar Mistakes
Top 10 Errors to Avoid
Incorrect
Correct
Explanation
Me and John went
John and I went
Subject form: I. Put yourself last
She don't like it
She doesn't like it
3rd person singular needs doesn't
Its raining
It's raining
It's = it is. Its = possessive
There house is big
Their house is big
Their = possessive. There = place
Could of gone
Could have gone
Modal + have, not "of"
Less people
Fewer people
Fewer = countable, Less = uncountable
I am agree
I agree
Agree is verb, don't use "am"
More better
Better
Better already comparative
Did you went?
Did you go?
After did, use base form
I have 20 years
I am 20 years old
Age uses "be" in English
More Fixes:
Double negative: I don't need no help → I don't need any help.
Affect vs Effect: Affect = verb. Effect = noun. The weather affects my mood. The effect was strong.
Who vs Whom: Who = subject. Whom = object. Who called? To whom did you speak?
Practice Questions
1. Fix: "Me and him was playing in the park."
He and I were playing in the park. (Subject pronouns, plural verb)
2. Choose: "There are (less/fewer) cars today."
fewer cars - cars are countable
Congratulations!
You have completed the English Grammar Revision Course