`1`. spent

- DHNB: last year -> QKD

`2`. decided

`3`. went

`4`. swam

`5`. built

`6`. rented

`7`. drove

`8`. were driving

`9`. rained

-> Câu 8 + 9 -> diễn tả hành động đang xảy ra thì có hành động khác xen vào

+ Hành động đang xảy ra -> QKTD: S + was/were + Ving

+ Hành động xen vào -> QKD: S + V2/ed

`10`. didn't affect

`11`. visited

`12`. ate

`13`. walked

`14`. saw

`15`. had

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Cấu trúc quá khứ đơn:

(+) S + V2/ed

(-) S + did + not + Vinf

(?) Did + S + Vinf?

- DHNB: yesterday, ago, last night/year/month/Monday/Sunday..., in the past, in the last century, in + năm trong quá khứ.

Ex3:

`1`. stayed

- DHNB: last weekend -> QKD

- QKD: (+) S + V2/ed

`2`. went

- DHNB: last night -> QKD

- QKD: (+) S + V2/ed

- Go - went - gone: đi

`3`. had

- DHNB: last year -> QKD

`4`. was

- DHNB: last summer -> QKD

- QKD - tobe: (+) S + was/were + adj/N

`5`. visited

- DHNB: Last June -> QKD

- QKD: (+) S + V2/ed