`-` Cấu trúc thì QKĐ:

`+` Động từ to be:

`(+)` S+was/were+adj/noun+O+...

`(-)` S+was/were+not+adj/noun+O+...

`(?)` Was/Were+S+adj/noun+O+...?

       WH-word+was/were+S+adj/noun+O+...?

 I, he, she, it, danh từ số ít+was

We, you, they, danh từ số nhiều+ were

`+` Động từ thường:

`(+)` S+Ved/V2+O+...

`(-)` S+didn't+V(nguyên mẫu)+O+...

`(?)` Did+S+V(nguyên mẫu)+O+...?

       WH-word+did+S+V(nguyên mẫu)+O+...?

*Động từ to be:

`+)` S + was/were + N/adj/... + ....

`-)` S + was/were + not + N/adj/... + ...

`?)` Was/were + S + N/adj/....  + ....

*Câu hỏi WH_ question: WH _/ H_ + Was/were + S + N/adj/... + ... ?

*Động từ thường:

`+)` S + Ved/Vc2+... 

`-)` S + did + not + V-inf + ..

`?)` Did + S + V-inf + ... ? 

*Câu hỏi WH_/H_: WH_/H_ + did + S + V-inf + .. ?

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*Lưu ý:

`-` I + was ( trong QK)

`-` He/she/it/ N(số ít) + was (trong QK)

`-` You / we/they/N(số nhiều) + were