`2`. The last time I wrote to her was three years ago.

`-` It's + time + since + S + (last) + V2/ed

`=` The last time + S + V2/ed + was + time + ago

`3`. I wish you had told us about this.

`@` Câu ước không có thật ở quá khứ:

`-` S + wish/wishes + S + had + V3/ed

`4`. The garden is so small that we can't play football in.

`@` Cấu trúc:

`-` S + tobe + too + adj + (for sb) + toV-inf: Qúa..đến nỗi không thể làm gì..

`=`  S + tobe + so + adj + that + S + V: Qúa..đến nỗi mà..

`5`. I really I wish I had invited her to the party.

`@` Câu ước không có thật ở quá khứ:

`-` S + wish/wishes + S + had + V3/ed

`6`. I'd rather you didn't smoke in here.

`-` Woud you mind + Ving?

`=` S + would rather + S + V(quá khứ)

`7`. I wish you wouldn't say things like that.

`@` Câu ước không có thật ở hiện tại:

`-` S + wish + S + V2/ed

`8`. We have worked for this company for seven years.

`-` S + started/began + toV/Ving + time + ago

`=` S + have/has + V3/ed + for/since + khoảng thời gian/mốc thời gian

`9`. Mark is the most intelligent in my class.

`-` No body/one + in(place) + tobe + more + adj + than + S

`=` S + tobe + the + most + adj + in(place)

`10`. The test was so difficult that we couldn't do it.

`@` Cấu trúc so..that:

`-` S + tobe + so + adj + that + S + V: Qúa..đến nỗi mà..