Ⅱ.句型转换
1．While you are walking your dog, you must be careful.
While ________ ________ ________， you must be careful.
2．It happens that I am free today.
I ________ ________ ________ ________ today.
3．When I heard the song for the first time, I liked it.
________ ________ ________ I heard the song，I liked it.
4．He gets up early every day to learn English well.
He gets up early every day ________ ________ ________ learn English well.
5．It's useless to cry over spilt milk.
It's ________ ________ ________ over spilt milk.
答案：1.walking your dog 2.happen to be free 3.The first time
4．in order to/so as to 5.no use crying
