by the time 的具體用法有哪些？

1、到...為止,一般要求主句用過去完成時。

He had left by the time we reached home.

當(dāng)我們到家的時候他已經(jīng)走了。

The movie had begun by the time we got there.

當(dāng)我們到那兒的時候,電影已經(jīng)開始了。

2、…當(dāng)……的時候;

如果只是說過去某個時候的狀況,用過去時,而不用完成時。

By the time the war was over ,death and suffering were to be seen everywhere.

在戰(zhàn)爭結(jié)束的時候,到處可見死亡和饑餓.這里沒有“死亡和饑餓”已經(jīng)完成的意思,只是描述當(dāng)時這個時間點的狀況.所以用過去時。

By the time we arrived the meeting was over.

我們到達時,會議已結(jié)束了。