6. Although she studied hard, she didn't pass the exam. 

( Although + S + V, .... giữ nguyên mệnh đề sau )

7. How tall is he ?

( Hỏi về chiều cao )

8. Despite being old, he plays sports well.

( CT :  Despite + N/V-ing,.... ) 

9. Although the weather was bad, a lot of people attended the festival.

( Although + S + V,... | Vế sau có động từ chia ở thì quá khứ đơn nên dùng tobe là was ) 

10. My mother used to live in a small town when she was a child. 

( Cấu trúc used to : S + used to + V - inf + O | used to thường dùng để diễn tả một sự việc xảy ra trong quá khứ mà không xảy ra ở hiện tại nữa ) 

Rewrite the sentences

6. Although she studied hard, she didn't pass the exam.

=> although + clause 1 (S + V), clause 2

7. How high is he?

=> how + adj + động từ to be + S

8. Despite being old, he plays sports well.

=> despite + V-ing/ noun phrase, clause

9. Although the weather was bad, a lot of people attended the festival.

=> dù thời tiết rất xấu, nhiều người đã tham gia lễ hội

10. My mother used to live in a small town when she was a child.

=> used to do sth: đã từng làm gì