As you can see below, you use them to make questions and to make negative answers and statements!
I / you / we / they | he / she / it | past tense - yesterday | |
Questions: | Where do you live? | When does school start? | How did you get home? |
do ... live? | does ... start? | did ... get? | |
What do we do now? | Does she really love him? | Why did she leave him? | |
do ... do? | does ... love? | did ... leave? | |
Negations: | I don't want to sit here. | She doesn't hate him. | We didn't like what we saw. |
do not want | does not hate | did not like | |
The girls don't drink coffee. | That boy doesn't smoke | Robin didn't forget his keys. | |
do not drink | does not smoke | did not forget |