`66.` Although my brother studied very hard, he still failed the exam

`-` Although + S +  V + O, a clause

`->` mặc dù `-` chỉ nguyên nhân

`67.` Having had breakfast, I went to school

`-` Struc:

After +  S +  had +   V3/ed  +  O ,  S +  V2/ed  + O
`=` Having   +   V3/ed  +   O,  S  +   V2/ed   +  O

`68.` I moved to Ha Noi because of wanting to find work

`-` Because +  S +  V + O,  S  +  V +  O

`=` Because of +  N/V_ing,  S +  V  + O

`->` bởi vì

`69.` George is the first person to be interviewed

`70.` It was a lot of exercises that we have to do tonight

`-` Câu chẻ:

It + is/was +  N + that + a clause

`->` dùng để nhấn mạnh chủ ngữ