10 English Grammar Rules to Learn First (With Examples)

Priya Sharma

Priya Sharma writes English learning guides for ESL students. Pune-based language enthusiast.

Visual representation of the voice · not a photographic portrait

Quick answer: Start with about ten core rules: word order, the verb to be, simple present and past, the -s for he/she/it, questions with do, articles, plurals, basic prepositions, and can/will. They cover most everyday sentences; the rest can wait.↗ Share on X

You do not need to learn every English grammar rule before you start speaking. You need about ten core rules: word order, the verb "to be," simple present and simple past, the extra "s" for he/she/it, questions with "do," articles (a, an, the), plurals, basic prepositions, and "can" and "will." These cover most everyday sentences. Learn them first, practice them in short real sentences, and fix the most common mistakes as you go. The rest of grammar can wait.

Here is what those rules look like in practice, and the mistakes almost every learner makes.

Why start with only ten rules?

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Grammar books list hundreds of rules, and many learners quit before they can hold a simple conversation. A small set of rules used well is more useful than a long list you cannot use. Think of it like learning to drive: first you learn to start, stop, and turn. Parallel parking comes later.

Rule 1: What is the basic English word order?

Most English sentences follow Subject + Verb + Object, often called SVO.

• *Maria* (subject) *drinks* (verb) *coffee* (object).
• *I* *need* *help*.

Time and place usually go at the end: *I work at a bank every day.* Many languages allow freer word order. English does not. If a sentence sounds strange, check this order first.

Rule 2: How do you use "to be"?

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"To be" is the most used verb in English, and it is irregular.

Use it for names, jobs, feelings, places, and descriptions: *She is a nurse. We were tired. The keys are on the table.*

Common mistake: leaving it out. Say *I am hungry*, not *I hungry*.

Rule 3: When do you add "s" to a verb?

In the simple present, add -s or -es to the verb only with he, she, it (or one person or thing).

• *I work. You work. He works.*
• *She watches TV. It goes fast.*

This is the single most common error for learners at every level. Say *He likes pizza*, not *He like pizza*.

Rule 4: How do you talk about the past?

For most verbs, add -ed: *work → worked, play → played*. Many common verbs are irregular and must be memorized: *go → went, have → had, buy → bought, see → saw, make → made*.

Start with the 20 to 30 irregular verbs you use most. Make flashcards with the verb on one side and the past form on the other.

Common mistake: using the past twice in a negative. Say *I didn't go*, not *I didn't went*. After "did" or "didn't," the verb goes back to its base form.

Rule 5: How do you make questions and negatives?

For most verbs, English uses a helper verb: do / does / did.

Notice that with "does" and "doesn't," the extra -s moves to the helper: *Does she work?*, not *Does she works?*

With "to be" and with "can" or "will," you do not need "do": *Are you ready? She can't swim. Will you come?*

Rule 6: When do you use a, an, and the?

Articles confuse speakers of many languages. Keep these basic rules in mind:

1. A / an = one thing, not a specific one, mentioned for the first time. *I saw a dog.*

2. An goes before a vowel sound: *an apple, an hour* (the "h" is silent), but *a university* (it starts with a "you" sound).

3. The = a specific thing both people know about. *The dog was big.*

4. No article for general plural or uncountable ideas. *Dogs are friendly. I like music.*

Common mistake: *The life is hard.* In English, when you talk about something in general, skip "the": *Life is hard.*

Rule 7: How do plurals work?

Add -s to most nouns: *book → books*. Add -es after s, sh, ch, x: *box → boxes, watch → watches*. Some are irregular: *man → men, child → children, person → people, tooth → teeth*.

Some nouns are uncountable and have no plural: *information, advice, money, water, furniture*. Say *some advice*, not *advices*.

Rule 8: Which prepositions matter most at first?

Prepositions are small words like in, on, at. For time and place, this short table covers most daily needs:

A simple way to remember: in is the biggest space or time, on is medium, at is a small, exact point.

Rules 9 and 10: How do "can" and "will" work?

These are easy because they never change:

• *I can swim. She can swim.* (no -s)
• *I will call you. He will call you.*

After "can" and "will," use the base verb with no "to": *She can drive*, not *She can to drive*.

"Will" talks about the future. Another common way is going to: *I'm going to study tonight.* For beginners, both are fine in most conversations.

What are the most common English mistakes?

Here are errors that teachers see again and again, with the fix:

Pick two mistakes from this table that you make and focus on only those for one week.

How should you practice these rules?

Reading rules is not enough. You need to use them in short, real sentences.

1. Write five sentences a day about your life using one rule. Example for Rule 3: *My sister works at a store. She takes the bus.*

2. Read them out loud. Your mouth needs practice as much as your brain.

3. Record yourself on your phone once a week and listen for the -s and the past forms.

4. Change one sentence three ways: statement, question, negative. *She likes tea. Does she like tea? She doesn't like tea.*

5. Use a free grammar checker carefully. It can catch errors, but read why it made the change so you learn the rule.

6. Talk with real people as soon as you can, even with mistakes. People will understand you far sooner than you expect.

What can wait until later?

Once the ten rules feel natural, move on to the present perfect (*I have lived here for two years*), conditionals (*If it rains, I will stay home*), and the passive voice (*The car was fixed*). These are useful, but they are built on the basics. Learning them too early is one reason many learners feel lost.

Your next step

Today, take Rule 3 (the extra -s for he, she, it) and write five sentences about someone you know: what they do, where they work, what they like. Read them out loud. Tomorrow, turn each sentence into a question with "does" and a negative with "doesn't." Do one rule per day, and in about two weeks you will have practiced all ten.

FAQ

What is the most common English grammar mistake?

Forgetting the -s on verbs with he, she, or it in the present tense, as in 'He like pizza' instead of 'He likes pizza.'

When do I use 'an' instead of 'a'?

Use 'an' before a vowel sound, not just a vowel letter: 'an hour' (silent h) but 'a university' (starts with a 'you' sound).

Should I learn grammar before speaking?

No. Learn a small set of core rules and start using them in short real sentences right away. Speaking with mistakes is part of learning.