`1` Before she prepared tea for her kids , she had arrived home .

`2` After John had prepared everything for the party , all the guests arrived .

`3` Before she had a good mark , she had prepared well for the exams .

`4` After he had lived in London for three years , he moved to Lisbon .

`5` Before I bought a car , I had passed my driving test .

`-` Sự kết hợp của thì quá khứ đơn `-` quá khứ hoàn thành .

`@` Before + S + V(quá khứ) + O , S + had + V3/Vpp + O .

`@` After + S + had + V3/Vpp + O , S + V(quá khứ) + O .

`1`. Before she prepared tea for her kids, she had arrived home.

`2`. After John had prepared everthing for the party, all the guests arrived.

`3`. Before she had a good mark, she had prepared well for the exams.

`4`. After he had lived in London for three years, he moved to Lisbon.

`5`. Before I bought a car, I passed my driving test.

`---------`

`@` Cấu trúc:

`-` Before + S + V2/ed, S + had + V3/ed: Trước khi ai làm gì thì ai đó làm gì..

`-` After + S + had + V3/ed, S + V2/ed: Sau khi ai làm gì thì ai đó làm gì..

`=>` Diễn tả hành động xảy ra trước `1` hành động khác trong quá khứ.