`37.` How long is it since he started working?

`@` When + did + S + V_inf + O?

`=` How long is it since + S + V2/ed + O?

`38.` The children prefer watching TV to reading.

`-` prefer doing sth to doing sth

`->` thích làm gì hơn làm gì

`39.` He is watching TV, isn't he?

`-` Câu hỏi đuôi HTTD:
S + am/is/are +  V_ing + O, is/are + not + S?
`40.` he denied stealing the car

`-` deny doing sth : từ chối, phủ nhận làm gì

37. How long is it since he started working?

How long is it since + S +V2/ed? 

38. The children prefer watching TV to reading.

prefer Ving to Ving: thích làm gì hơn làm gì 

39. He is watching TV now, isn't he?

S + am/is/are  +Ving, am/is/are+ not + S? câu hỏi đuôi 

40. He denied stealing the car.

denied + Ving: phủ nhận, từ chối

`color{orange}{~MiaMB~}`