复合句改为简单句
问题描述：
复合句改为简单句
You must be careful when you are walking the dog.
不能把它分成两句吧？
You must be careful to walk the dog.行不行？
答
You must be careful when walking the dog.这下对了,是这样的,当主句和从句主语一致的时候,从句的主语和助动词可以省略我们看从句,when you are walking the dog主语you,助动词 are所以答案You must be careful whe...