No sooner had the bell rung____A.when the class began B.than the class began C.while the class began D.then the class began 为什么选B呢?

问题描述:

No sooner had the bell rung____
A.when the class began B.than the class began C.while the class began D.then the class began 为什么选B呢?

noon sooner .......than 是固定搭配啊~亲

no sooner...than ,固定搭配,一.... 就...,
铃一响,就开始上课。

no sooner ...than...= hardly...when...是固定搭配,表示一.就,样了.
这句话的意思是:铃声刚响课就开始了.