-were grateful to the student for___in advance.A.they had been informed this

题目

-were grateful to the student for___in advance.A.they had been informed this
B.having informed them this C.being informed of this
D.informing them of this
应选哪个 其他为何不对?

答案

答案是C题意是：对这个学生很感激,因为他提前通知了我们这件事.语法点：1）介词用法：介词for后面的接续词.介词for不可以接从句.所以A错误.2)固定词组用法：inform sb of sth通知某人某事.从四个选项看A,B因为没有用...