一般过去时与现在完成时之间的转换：

题目

一般过去时与现在完成时之间的转换：
1.The film began five minutes ago.(改成现在完成时)
The film___ ___ ___ for five minutes.
2.They got to know in 1984.
They ___ ___ each other since 1984.
3.My mother bought the red car three years ago.
My mother___ ___ the red car three years ago.
4.He received a letter from his sister three days ago.
Three days ___ ___ ___ he received the letter from his sister.
5.We haven't seen each other for a long time.
___ ___ a long time ___ we met last.
6.The Greens came to China in 1994.
The Greens ___ ___ ___ China for 13 years.

答案

1.has been on
2.have known
3.这里是不是漏了个since呢?
My mother has had the red car since three years ago.
4.have passed since
5.It is since
6.have been in