懂英语的来,since untilasafter的区别The firemen arrived half an hour_
懂英语的来, since until as after 的区别 The firemen arrived half an hour______the alarm was first raised,when it was too late to save much of the building. 应该填这四个当中的哪一个?
since:自从, until:直到—— as:当或因为 after:之后 例句: I have lived here since five years ago. I didn't go until he come back. He didn't go out as it rained. He left after she came back.