新概念3第60课中的一句是不是有语法问题?The only thing to do was ask them to come half an hour later

问题描述:

新概念3第60课中的一句是不是有语法问题?The only thing to do was ask them to come half an hour later
was 和 ask 怎么能同时出现在一个句子里?

ask前省略了to,不定式有些情况是可以省略to的.当不定式做表语时,前面出现了do这个词(无论do在句子做什么成分),则做表语的不定式可省略to.又如:The first thind he did was go to his coach and thank him.