The bell rang _____the beginning of the class.

问题描述:

The bell rang _____the beginning of the class.
A.to announce B.and announce C.announcing D.announced
正确答案是什么 why?

答案:A
方法--排除法
B:rang 为过去式,若后加and,则announce也应为过去时 announced
C:用announcing时,为现在进行时做伴随状语,但announcing前应加逗号
D:若表示两并列动作,应为 and announced,此处不能直接用过去式或过去分词
答案A:the bell rang to announce 意为“铃响了,表明开始上课了”