39. This ladder is high. You can use it to hang Christmas decorations.  This ladder is ___________________________________________________________. 40. Rachel turns on the TV. She wants to watch the news.  Rachel turns on the TV in __________________________________________________. 41. She started learning English since she was in grade 4.  She has ________________________________________________________________. 42. We began living here twenty years ago.  We have ________________________________________________________________. 43. She started to play the guitar two months ago.  She has _________________________________________________________________. 44. He began collecting stamps in 2001.  He has __________________________________________________________________. 45. When did you first know that teacher?  How long have ___________________________________________________________? 46. “Can you put this bag on the shelf.” I said to Mai.  I told ___________________________________________________________________. 47. “You should do more exercises for this lesson.”, the teacher said to Nga.  The teacher ______________________________________________________________.

`39`.This ladderr is high enough for you to use it to hang Christmas decorations

`\rightarrow` Enough : S + be / be not + adj + enough ( for O ) + to do sth

`40`.Rachel turns on the TV in order to watch the news

`\rightarrow` in order ( not ) to + V : Để mà ( không )

`41`.She has learned English since she was in grade 4

`\rightarrow` Thì HTHT : S + have / has + V3 / PII

`\rightarrow` Đặc điểm nhận dạng : since

`42`.We have lived here for twenty years

`\rightarrow` Thì HTHT : S + have / has + V3 / PII

`\rightarrow` Đặc điểm nhận dạng : for

`43`.She has played the guitar for two months

`\rightarrow` Thì HTHT : S + have / has + V3 / PII

`\rightarrow` Đặc điểm nhận dạng : for

`44`.He has collected stamps since 2001

`\rightarrow` Thì HTHT : S + have / has + V3 / PII

`\rightarrow` Đặc điểm nhận dạng : since

`45`.How long have you first known that teacher ?

`\rightarrow` Thì HTHT ( CNV ) : Have / Has + S + V3 / PII ?

`46`.I told Mai to put this bag on the shelf

`\rightarrow` Câu mệnh lệnh : S + asked / ordered / ... + O + ( not ) + to V

`47`.The teacher told Nga that she should done more exercises for this lesson

`\rightarrow` Câu tường thuật : S + said to / told / said + O + that + S + V ( lùi thì )

`\text{@ TheFox}`