例句：

　　1、 It's a long time since they left.

　　他們已經(jīng)離開(kāi)很久了。

　　2、 When I left they were all still hard at it.

　　我離開(kāi)的時(shí)候他們都還在努力工作。

　　3、 Many people leave the land to find work in towns and cities.

　　許多人離開(kāi)農村到城鎮里找工作。

　　4、I'm still due 15 day's leave.

　　我還應有15天的休假。

　　5、 It's not for me to say why he left.

　　不適宜由我說(shuō)出他離開(kāi)的原因。