FORMULA
| + | - / ? |
| V/Vs | do/does + V |
FORM
Affirmative sentences: V/Vs
| I | V | I work |
| We | V | We work |
| You | V | You work |
| They | V | They work |
| He | Vs | He works |
| She | Vs | She works |
| It | Vs | It works |
Negative sentences: do/does + not + V
| I | do not + V | I do not work |
| We | do not + V | We do not work |
| You | do not + V | You do not work |
| They | do not + V | They do not work |
| He | does not + V | He does not work |
| She | does not + V | She does not work |
| It | does not + V | It does not work |
do not = don't
does not = doesn't
Interrogative sentences: ... do/does + S + V … ?
| (QW) | do/ does | S | V | "extra information" | ? |
| Do | I | work | on Sundays | ? | |
| Do | we | work | at weekends | ? | |
| Where | do | you | work | ? | |
| When | do | they | work | ? | |
| Does | he | work | in London | ? | |
| Why | does | she | work | every day | ? |
| Does | it | work | ? |
Short answers:
Yes, S + do/does.
No, S + don't/doesn't.
| Yes, | I | do. | No, | I | don't. | |
| Yes, | we | do. | No, | we | don't. | |
| Yes, | you | do. | No, | you | don't. | |
| Yes, | they | do. | No, | they | don't. | |
| Yes, | he | does. | No, | he | doesn't. | |
| Yes, | she | does. | No, | she | doesn't. | |
| Yes, | it | does. | No, | it | doesn't. |
Note: In short answers we use pronouns (I, we, you, they, he, she, it).
— Does Mary go shopping every day?
— No, she doesn't.
(Not: No, Mary doesn't.)
Revise!
The verb "be" in Present Simple.
The verb "have" in Present Simple.
***
S — Subject of the sentence
QW — Question word
V — Verb (the infinitive of the verb without "to"/ Present Simple verb (for I, we, you, they). E.g. write, go, listen, etc.
Vs — Present Simple verb (for he, she, it). E.g. writes, goes, listens, etc. Revise how to add "s" to a verb here.