We use did in simple past negative and questions:
| Base form | | Positive | | Negative | | Question | ||||||
| watch clean play do go have begin | | I We You They He She it | watched cleaned played did went had began | | I We You They He She it | did not (didn’t) | watch clean play do go have begin | | did | I We You They He She It | watch . . .? clean . . .? play . . .? do . . .? go . . . ? have . . .? begin . . .? | |
Do/does (present) did (past) :
- I don’t watch televisionvery often.
- I didn’t watch television yesterday.
- Does she go out very often?
- Does she go out last night?
We use did/didn’t + base form (watch/clean/do, etc)
I watched but I didn’t watch (not “I didn’t watched”)
he went but did he go? (not “did he went”)
I watched but I didn’t watch (not “I didn’t watched”)
he went but did he go? (not “did he went”)
- I played tennis yesterday, but I didn’t win.
- Don didn’t have breakfast this morning.
- They went to a movie, but they didn’t enjoy it.
- We didn’t do much work yesterday.
Note the word order in question with did :
| Did + subject + base form | ||||
| What How Where | Did did did did | Sue you the accident your parents | give do happen? go | you a birthday present? last night? on their vacation? |
| Short answer | |
| I/we/you/they Yes, did she/he/it | I/we/you/they No, didn’t she/he/it |
- “Did you see Joe yesterday?” “No, I didn’t.”
- “Did it rain on Sunday?” “Yes, it did.”
- “Did Mary come to the party?” “No, she didn’t.”
- “Did your friends have a good vacation?” “Yes, they did.”
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