36. My sister would like to be a pilot in the future.

would like + to V /N : muốn 

a + N số ít 

38. My brother often watches cartoons on TV at the weekend.

S số ít  +Vs/es

ADV chỉ tần suất + V 

on TV: trên tivi 

at the weekend: vào cuối tuần 

39. Why shouldn't I run down the stairs?

Wh + shouldn't + S+ V1? 

40. You shouldn't ride your bike too fast because you may fall off it. 

shouldn't + V1: không nên làm gì 

S  +V + too + ADV

Clause+ because + clause: bởi vì 

may + V1: có thể 

`color{orange}{~MiaMB~}`

đáp án + bước giải

36.my sister would  like tobe a pilot in the future

38.my brother often watches cartoon on tv at the weekend.

39.why shouldn't I run down the stairs?

bước giải:

36.câu hỏi của nó là:what would sister like tobe in the future?

cách trả lời là:my sister/she would like tobe+a/an +nghề nghiệp+in the future.

38.câu trả lời là:my brother often+ĐT+at the weekend.

39.câu trả lời là:why+shouldn't/should+ĐT!

cho một timnha!