When you arrive at school,the first thing is to greet the teacher为什么不是greeting
问题描述:
When you arrive at school,the first thing is to greet the teacher为什么不是greeting
答
楼主是问为什么用to greet不用greeting?这是因为句中有first(其他序数词,以及the last等都可以).比如He is always the first to come,and the last to leave.固定用法来的,其后的动词做定语或表语都有这个规律.