Subject-Verb Agreement Mistakes
Subject-verb agreement — he don't, she have, they is — is the #1 grammar mistake. Learn the one rule that fixes all of these errors and practise until it becomes automatic.
Simple explanation
The verb in a sentence must match its subject. If the subject is singular (one person or thing), the verb takes the singular form. If the subject is plural (more than one), the verb takes the plural form.
This is called subject-verb agreement — and breaking it is one of the most common mistakes in spoken and written English.
Why it matters
Subject-verb agreement errors are noticed immediately. They are not small — they signal to a listener that you are still learning the basics. Fixing just this one habit makes your English sound significantly more confident.
The most common errors — and the fixes
1. "He don't" / "She don't"
He / she / it always uses doesn't, never don't.
2. "She have" / "He have"
He / she / it uses has. Only I / you / we / they use have.
3. "They is" / "We is"
4. "The team are working hard" vs "The team is working hard"
In standard English, collective nouns (team, family, company, government) take a singular verb:
The quick-reference table
| Subject | Correct verb (present) | Example |
|---|---|---|
| I | am / have / go | I am tired. I go early. |
| You | are / have / go | You are correct. |
| He / She / It | is / has / goes | She is ready. He goes first. |
| We / They | are / have / go | They are waiting. |
Daily life usage
- "My manager doesn't reply on weekends." (not don't)
- "The office has a new printer." (not have)
- "She works from home on Fridays." (not work)
- "We don't have a meeting today." (we → don't, correct)
- "It doesn't matter — let's move on." (it → doesn't)
Common mistakes
Memory trick
Practice quiz
Q1Which sentence is correct?
Quick summary
- He / she / it → is, has, does, goes (add -s to the verb).
- I / you / we / they → are, have, do, go (base form).
- Negative: he/she/it → doesn't + base verb. I/you/we/they → don't + base verb.
For one week, pause before every sentence with he, she, or it. Ask yourself: does the verb end in -s? If not, add it. Seven days of this one habit will fix the most common grammar mistake in English.
Finished reading? Practice what you read — a few gentle questions, no scores kept against you.