`-` Thì QKĐ : S + Ved / V2

`=>` `DHNB` : yesterday , ago , last , ...

`-` Thì QKTD : S + was / were + V-ing

`=>` `DHNB` : this time last year , at this time last night , ...

`1`.broke / were playing

`2`.were playing / were practicing

`3`.was listening / was reading

`4`.fell / was paining

`5`.turned / read / answered

`6`.was teaching / was preparing

`7`.saw / screamed

`8`.was watching / went

`\text{@ TheFox}`

Đáp án:

`1,` broke - were playing

`2,` were playing - were practicing

`3,` was listening - was reading

`4,` fell - was paining

`5,` turned - read - answered

`6,` was teaching - was preparing

`7,` saw - screamed

`8,` was watching - went

Giải thích:

Thì Quá Khứ Đơn:

$(+)$ S + V2 / V-ed 

$(-)$ S + didn't + V

$(?)$ Did + S + V ?

$→$ DHNB `:` ago`,`last`,`yesterday`,`in the past ...

Thì Quá Khứ Tiếp Diễn:

$(+)$ S + was / were + Ving

$(-)$ S + was / were + not + Ving

$(?)$ Was / Were + S + Ving ?

$→$ DHNB `:` at / in / on ... + time + timeline