Present Simple - Do/Does, Don't Doesn't

| Person | Singular | Plural |
| First | I | We |
| Second | You | You |
| Third | He/She/It/The boy/Any name | They/The boys |
Helping Verb – Do/Does
| Singular Subject | Does |
| Plural Subject | Do |
Affirmative Sentences
If subject is third person singular i.e. he/she/it/name
Subject + Verb 1st (s/es/ies) + object + other
Visit here for checking s/es/ies use
Negative Sentences
Subject + do/does + not + verb 1st + object + other
| Third Person Singular Subject i.e. he/she/it/the boy/any name | Does not/doesn’t |
| Plural Subject | Do not/don’t |
Rule
| Person | Singular | Plural | Do/Does |
| First | I | We | Do not/don’t |
| Second | You | You | Do not/don’t |
| Third | He/She/It/The boy/Any name | They/The boys | Does not/doesn’t |
For Example
| She does not write | ‘She’ is third person singular (So subject + does not/doesn’t) |
| They do not write | ‘They’ is third person plural (So subject + do not/don’t) |
| I do not run | ‘I’ is first person singular (So subject + do not/don’t) |
| The boy does not run | ‘The boy’ is third person singular (So subject + does not/doesn’t) |
Interrogative Sentences
Do/Does + Subject + Verb 1st + Object + Other?
For Example
| Does she write? | ‘She’ is third person singular (does + subject?) |
| Do they write? | ‘They’ is third person plural (do + subject?) |
| Do I run? | ‘I’ is first person singular (do + subject?) |
| Does the boy run? | ‘The boy’ is third person singular (does + subject?) |
Interrogative & Sentences
Do/Does + Subject + not + verb 1st + object + other
| Does she not write? | ‘She’ is third person singular (does + subject + not ?) |
| Do they not write? | ‘They’ is third person plural (do + subject + not?) |
| Do I not run? | ‘I’ is first person singular (do + subject + not?) |
| Does the boy not run? | ‘The boy’ is third person singular (does + subject + not?) |
Wh Family
Wh word + do/does + subject + not + verb 1st + object + other
| Why Does she not write? | ‘She’ is third person singular (Why + does + subject + not ?) |
| Where do you live? | ‘you’ is second person plural/singular (Where + do + subject?) |
| What does he write? | ‘he’ is third person singular (What + does + subject?) |
| Whom does he like? | ‘he’ is third person singular (Whom + does + subject?) |