I finished my homework, then I went to bed last night.

`=`Before I went to bed, I had finished my homework last night.

`=`After I had finished my homework last night, I went to bed.

`=`By the time I went to bed, I had finished my homework last night.

`=`When I went to bed, I had finished my homework last night.

`=`No sooner had I finished my homework than I went to bed.

`=`Hardly had I finished my homework when I went to bed.

* Giải thích :

`-`Khi có hai câu ở quá khứ đơn mà nối với nhau thì ta có các cách viết lại như sau :

`C1` : Before `=`When `=`By the time + S + V2/ed, S + had (not) + Vpp

`C2` : After + S + had (not) + Vpp, S + V2/ed

`C3` : No sooner + had + S + Vpp + than + S + V2/ed

`C4` : Hardly + had + S + Vpp + when + S + V2/ed

`=`Scarely + had + S + Vpp + when + S + V2/ed

`*`Hành động xảy ra trước chia ở thì quá khứ hoàn thành, hành động xảy ra sau chia ở thì quá khứ đơn.