課本中不會教你的[B]109　before long和long before

109　before long和long before

① before long意為“不久，很快，一會兒后”，相當于soon，after a short while，多用于將來時或過去時中。

He will return before long. 他不久就會返回的。

Before long they got enough money to build the school. 不久，他們就弄到了足夠的錢建造那所學校。

② long before意為“很久以前”，相當于long ago，before是副詞，常用于過去時中。

They left their hometown long before. 他們很久以前離開家鄉(xiāng)的。

She said that she had known your name long before. 她說她早就知道你的名字。

③ long before+句子表示“在……前很久，要過很久……才”，not long…before+句子表示“不久就……，不多久……就”，這里的before是連詞。這種結(jié)構(gòu)可用于過去時或?qū)頃r。

It was not long before she got everything ready. 不久，她就把一切都準備好了。

It won't be long before he finishes reading the book. 他不久就會讀完這本書。

It will be long before the train arrives. 要過很久火車才能到達。

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He will be here before long. 他不久就會來這里。

He was here long before. 他很久以前在這里。

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注意下面的類似結(jié)構(gòu)：

It was some days before… 過了好幾天才……

It was quite some time before… 過了好半天才……

It was hours before… 過了好幾個鐘頭才……

It will be years before… 要過好幾年才……