`10`. I keep the window open so as to let fresh air in.

So as to + V: để mà

`11`. Tony went to Paris because he wanted to see the Eiffel Tower.

Because + mệnh đề: bởi vì

`12`. Jim failed all his university exams despite working hard.

Despite/In spite of + Ving/N: mặc dù

`13`. The telephone rang. The baby woke up. (when)

When the telephone rang, the baby woke up.

When + past simple, past simple: diễn tả các hành động xảy ra liên tiếp trong quá khứ

`14`. Although I had a cold, I went to class anyway. 

Although + mệnh đề: mặc dù

`15`. They locked the door in order not to be disturbed.

In order to V: để mà

`10` I keep the window open so as to let fresh air in.

Cấu trúc: S+ V+ in order to/ so as+ to V.

`11` Tony went to Paris because he wanted to see the Eiffel Tower.

Cấu trúc: Because+ clause 1, clause 2.

`12` Jim failed all his university exams despite working hard.

Cấu trúc: Despite/ In spite of+ Ving/ N phrase, clause.

`13` When the telephone rang, the baby woke up.

Cấu trúc: When+ S+ V2/ V-ed, S+ V2/ V-ed.

`14` Although I had a cold, I went to class anyway. 

Cấu trúc: Although+ clause 1, clause 2.

`15` They locked the door in order not to be disturbed.

Cấu trúc: S+ V+ in order to/ so as+ to V.