`1.` Did you go to her birthday last night?

`->` "last night" là DHNB của thì QKĐ

`2.` Did Anna and Susan visit their grandparents last month?

`->` "last month" là DHNB của thì QKĐ

`3.` Did you have fun at the party?

`4.` Did he go swimming yesterday?

`->` "yesterdayt" là DHNB của thì QKĐ

`5.` Did they sing and dance at the party?

`-------`

`QKĐ`:

`-` Cấu trúc:

`(+):` S + V_ed/V_bpt

`(-):` S + didn't + V1

`(?):` Did + S + V1?

`DHNB:` last (night/month/week), yesterday, on/in/at (thời gian trong quá khứ), already, ...

`@Ka`

`1.` Did you go to her birthday last night `?`
`2.` Did Anna and Susan visit their grandparents last month `?`
`3.` Did you have fun at the party `?`
`4.` Did he go swimming yesterday `?`
`5.` Did they sing and dance at the party `?`

`-` Hành động đã xảy ra trong quá khứ và đã chấm dứt .

`=>` Quá khứ đơn : Did + S + V-inf + O ... `?`