英语选修6译林牛津Unit 4基础训练题（答案）【江苏专用】
Ⅰ.同义转换
1．If there were no water，there would be no life.
→Without_water，there would be no life.
2．I didn't know his address，so I didn't write to him.
→If I had known his address，I would_have_written to him.
3．It is said that he has invented a new machine.
