知识拓展

keep... from doing 阻止....做某事

prevent/stop... (from) doing 妨碍/阻止...做某事

在be prevented/stopped from doing 结构中,介词from 能省略吗?

不能 如:We are prevented/stopped from going there.

4、depend on/upon依靠,依赖,相信，取决于

depend on/upon +wh-从句 视....而定,取决于

depend on/upon+sb.+to do 指望某人做......

depend on/upon +it +that.... 指望.....

That (all) depends. / It all depends. (口语)视情况而定，单独使用或置于句首。

Translate the following sentences into English.

① 你不能永远依赖你的父母

② 你不能指望他能按时来。

③ 你可相信他会来。

④ 我能帮你，但那要看情况而定。

⑤ 这要取决于你是否到这儿。

Key: ① You can't depend on your parents forever.

②You can't depend on him to come on time.

③ You may depend on it that he will come.

④ I may help you. But that/ it depends.

⑤ It depends on /upon whether you come here or not.

5、squeeze out 榨出,挤出

They have been squeezed out of the job market by young people.

他们被年轻人挤出了就业市场。

知识拓展

squeeze money from sb 向某人勒索钱财

squeeze money out of sb ;, 向某人勒索钱财

The young man often squeezes money from/out of the pupil.

那个年轻人经常向那个小学生勒索钱财。

6、over and over again

over and over again = again and again, 一再,再三,许多次