36. English is spoken in the world by many people.

-> Bị động hiện tại đơn: S + is/am/are + Vpp 

37. The man who is my father's friend is sitting next to me.

-> Who thay cho chủ ngữ chỉ người

38. It's difficult to learn to drive a car.

-> Ving + be + adj = It is + adj + to V

39. I asked the tourists if they were from Australia.

40. Ba is studying very hard so as to not to fail in the exam.

-> so as not to Vinf -> chỉ mục đích 

36. Enlish is spoken in the world.

37. The man sitting next to me is my father's friend.

+ ) The man who is my father's friend is sitting next to me.

38. It's difficult to learn to drive a car.

39. I asked the tourists if they were from Australia.

40. Ba is studying very hard so as not to fail in the exam.