when表示同時(shí)發(fā)生,或有先后.所有有時(shí)“when”可以換成“after”或"before"是的,一般結(jié)構(gòu)是：had done sth...when...did但when的結(jié)構(gòu)是靈活的,既可以將had done作為主句,可也以將did作為主句.所以：had done sth...wh...就是說(shuō)這里可以用when 也可以用 after before是嗎直接可以換成"after"，
They went home after they had spent all their money.
或倒過(guò)來(lái)可以用"before"
Before they went home, they had spent all their money.
they went home when they had spent all their money,為什么這里用when不用after呢?不是had done sth...when的嗎
they went home when they had spent all their money,為什么這里用when不用after呢?不是had done sth...when的嗎
英語(yǔ)人氣：786 ℃時(shí)間：2019-11-04 07:29:41
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