11. She prefers reading books in the library to chatting with her friends.

  → She likes reading books in the library better than chatting with her friends.

* Dịch: Cô thích đọc sách trong thư viện hơn tán gẫu với bạn bè.

* Công thức thích cái gì hơn cái gì:

      S+ prefer+ V_ing to V_ing.

→ S+ love + V_ing  better than V_ing.

12. You mustn't go fishing on the river.

→ You don't have to go fishing on the river.

 * Dịch: Bạn không được câu cá trong hồ.

* Công thức:

     S+ mustn't + `V_(1)`

→ S+ ought not to+ `V_(1)`

Hoặc:  S+ don't/ doesn't + have to+ `V_(1)`

11.⇒She likes reading books in the library than chatting with her friends.

( Prefer +V-ing+to+V-ing=like+V-ing+than+V-ing: thích ... hơn... )

12.⇒You don't have to go fishing on the river.

     ⇒You ought not to go fishing on the river.

( Must=Have to=Ought to : phải )