Question

英语问题!!!急!!!!!!!!!!!!!!!!!!!!!!!!!!

1 Please turn off the lihgts before you leave.(改为同义句)
Please turn off the lihgts _______ ________.
2 Cathy has been in China for a year.(同义句)
It ____ one year _____ Cathy left for China
能不能用 has been (It ____ one year),写出正确答案,再写出不是has been 的理由
It ____ one year _____ Cathy left for China 答案上是用is since 啊!!能告诉我理由吗

Answer 1

1 Please turn off the lihgts before you leave.(改为同义句)
Please turn off the lihgts before leaving.
2 Cathy has been in China for a year.(同义句)
It is one year since Cathy left for China
能不能用 has been (It ____ one year)?
答：也可以用 has been
It ____ one year _____ Cathy left for China 答案上是用is since 啊!!能告诉我理由吗
答：这是 since 的常用句型之一；
It is / has been +一段时间+ since +过去时 ，
你只要多造句，记住了就是。

Answer 2

1 Please turn off the lihgts before you leave.(改为同义句)
Please turn off the lihgts when you leave
2 Cathy has been in China for a year.(同义句)
It has been one year since Cathy left for China
一定是it has been，这个是固定句型
It has been a year since we last met.
上次咱们见面到现在有一年了