`#` $Fan$ $Elaina$
`1`/ was sitting / called
`2`/ arrived / was
`3`/ was watching
`4`/ went / had / met
`5`/ were playing / hurt
`6`/ were they doing ?
Công thức QKD:
S + V2 / ed + ...
- ) S + didn't + v-infinite + ...
? ) Did + S + v-infinite + ....
Công thức QKTD:
S + was / were + v-ing + ...
- ) S + was / were + not + v-ing + ...
? ) Was / were + S + v-ing + .... ?
Dấu hiệu nhận biết QKD: yesterday, last week, last month,...
Dấu hiệu nhận biết QKTD: last night at 10pm,... ( thời gian cụ thể tại quá khứ )
