there are many problems to solve 还是 to be solved 解释一下不定式什么时候用主动什么时候用被动
问题描述:
there are many problems to solve 还是 to be solved 解释一下不定式什么时候用主动什么时候用被动
答
这句是to be solved
是I solve problems
主动式I have so many problems to solve.
被动式 there are many problems to be solved