Every time I go to see my cousin Lilli,she is upstairs in her study,doing her lessons

问题描述:

Every time I go to see my cousin Lilli,she is upstairs in her study,doing her lessons
这句话对么?

可以的啊如果换成to do呢?doing换to do 吗? 不可以的 she 和do 之间是主动关系明白了么欢迎再问哟