名词性从句考点（主语，表语，宾语）

1，that 何时可以省略 1) that 在宾语从句大多数情况可以省略 (1)We regret (that) you did not find our prouct satisfactory. (2)We told the driver（ that） we were in a hurry.

2）在主语，表语，同位语从句中一般不能省略。

(1) That you want to be independent is only natural. (2)The advantage of DVD is that it gives you much better picture quality. (3)We should make people face the fact that a lot of people die from smoking every year.

2，if和whether 的区别： 1）在宾语从句中，if 和whether一般都可以使用.

在宾语从句中， 只能使用whether的情况： (1) 介词之后 Your success or failure depends on whether you work hard.

(2) 紧跟or not 时 She asked me whether or not he would come.

(3)接不定式 Can you tell me whether to go or to stay ?

(4) 主语从句，表语从句， 同位语从句只能用whether. Whether I will come depends on a number of things. The question is wether he will come to help.

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