5 English Grammar Rules and 7 Mistakes Beginners Make

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 five rules: subject + verb + object word order, verb agreement (he works, not he work), the four basic tenses, the articles a, an, and the, and questions or negatives with do, does, and did. These cover most everyday sentences. Advanced grammar can wait until you speak with confidence.↗ Share on X

The English grammar rules you need first are few: put words in the order subject + verb + object, make the verb agree with the subject, use the right tense for the time you mean, choose "a," "an," or "the" correctly, and build questions and negatives with helper verbs like "do" and "does." Learn these five well and most of your sentences will be clear, even if they are not perfect. Everything else, like phrasal verbs or the passive voice, can wait.

Below you will find each rule in plain words, the mistakes beginners make most, and a four-week practice plan.

Rule 1: What order do English words go in?

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English is strict about word order. The basic pattern is:

Subject + Verb + Object

• The subject is who or what does the action.
• The verb is the action.
• The object is what receives the action.

A simple order for longer sentences: who → does what → to what → where → when.

Example: "I met my friend at the park yesterday."

Adjectives, the words that describe nouns, usually go before the noun: "a red car," not "a car red."

Rule 2: How do you make the verb agree with the subject?

In the present simple tense, add -s or -es to the verb when the subject is he, she, it, or one person or thing.

Common mistake: "She work in a bank." Correct: "She works in a bank."

The verb "to be" is irregular, which means it does not follow the normal pattern:

• I am
• you / we / they are
• he / she / it is

Say "People are friendly," not "People is friendly." The word "people" is plural even without an "s."

Rule 3: Which tense should you use?

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Tense shows time. English has many tenses, but beginners can do a lot with four.

Tips that fix most tense errors:

1. Time words give the tense away. "Yesterday," "last week," and "ago" usually need past simple. "Now" and "at the moment" usually need present continuous.

2. Do not use present continuous for habits. Say "I go to the gym on Mondays," not "I am going to the gym on Mondays," when you mean every Monday.

3. Learn the most common irregular past forms first. Go → went, have → had, make → made, see → saw, get → got, take → took, come → came, say → said, know → knew, think → thought.

Rule 4: When do you use "a," "an," and "the"?

These small words are called articles. Many languages do not have them, so they cause a lot of mistakes.

• A goes before a consonant sound: a book, a university (it starts with a "you" sound).
• An goes before a vowel sound: an apple, an hour (the "h" is silent).
• The is for something specific that you and the listener both know about.

Example: "I bought a shirt. The shirt is blue." The first time, it is any shirt. The second time, it is that shirt.

When to use no article:

• Plural things in general: "Dogs are loyal."
• Uncountable things in general: "I like music." "Water is important."
• Most names of people, cities, and countries: "I live in Canada." (Exceptions: the United States, the United Kingdom.)

Rule 5: How do you ask questions and say "no"?

In the present simple and past simple, English uses helper verbs: do, does, did.

Notice: after "does," "doesn't," "did," or "didn't," the main verb goes back to its base form. Say "She doesn't like," not "She doesn't likes." Say "Did you go," not "Did you went."

With "to be," you do not need "do":

• "Are you tired?" not "Do you are tired?"
• "He isn't here," not "He doesn't is here."

For questions with a question word, use this order: question word + helper + subject + verb.

"Where do you live?" "What did he say?" "Why is she late?"

Seven common mistakes and how to fix them

The last one uses the present perfect, a tense that connects the past and the present. You do not need to master it in week one, but learn this pattern because you will hear it constantly: have/has + been + since/for.

Do you need to learn every rule before you speak?

No. Waiting until your grammar is perfect is one of the most common reasons people quit. Native speakers make small mistakes too. At the start, what matters most is that people understand you.

A useful way to decide what to study first:

1. Does this mistake change the meaning? Fix it first. "I will go" and "I went" mean very different things.

2. Does this mistake make me hard to understand? Fix it second. Wrong word order often does.

3. Does it just sound a little unnatural? Fix it later. A missing "the" rarely stops a conversation.

A four-week practice plan

Spend about 15 to 20 minutes a day. Short daily practice works better than one long session a week.

Week 1: Word order and "to be"

1. Write five sentences a day about yourself: "I am…," "I live in…," "I work at…"

2. Read them out loud.

Week 2: Present simple and questions

1. Describe your daily routine in ten sentences.

2. Turn each sentence into a question and a negative: "I drink coffee." → "Do I drink coffee?" → "I don't drink coffee."

Week 3: Past simple

1. Every night, write five sentences about what you did today.

2. List the irregular verbs you used and review the list the next morning.

Week 4: Articles and mixing tenses

1. Describe a photo: what is in it (a, an, the), what is happening (present continuous), and what happened just before (past simple).

2. Record yourself for one minute on your phone and listen for the seven common mistakes above.

What to do after you finish this list

Pick the one rule you break most often. Write it on a sticky note and put it where you will see it every day. For the next week, write three sentences a day that use only that rule, and say them out loud. When that mistake disappears from your recordings, move on to the next one on the list.

FAQ

What is the most important English grammar rule for beginners?

Word order. English almost always uses subject + verb + object, as in 'She drinks coffee.' If your word order is right, people usually understand you even when other small parts are wrong.

Why do we say 'She doesn't like' and not 'She doesn't likes'?

After the helper verbs do, does, did, doesn't, and didn't, the main verb always goes back to its base form. The helper verb already shows the person and the tense.

Should I learn grammar before I start speaking English?

No. Learn the basic rules and start speaking right away. Fix first the mistakes that change meaning or make you hard to understand, and leave small errors like a missing 'the' for later.