1. 连词+宾语从句 连词+to do

vI don’t know what I shall do next .

I don’t know what to do next .

vShe didn’t decide which one she would choose .

She didn’t decide which one to choose .

vPlease tell me whom you’ll give the letter to .

Please tell me whom to give the letter to .

2. It 常可以放在动词think, find, consider,

believe, feel, make等后作形式宾语：it 不

仅可以作形式主语, 还可以作形式宾语而

真正的宾语-that从句则放在句尾We heard it that she would get married

next month.

3.宾语从句中的连接词that在以下

几种情况下不能省略：

1）当两个名从并列时, 第二个that不能省；

Everyone knew what happened and that she

was worried. 2）用it做形式宾语的宾语从句。

I think it necessary that you should read

English aloud.

3）except后接的宾语从句不能省去that

His article is very good except that

there are only a few sentences.

4.只用whether不用if

•1）.引导宾语从句前置时，用whether不用if

Whether they will join in the Winter Camp I don't care.

2）.作动词discuss的宾语时

We are now discussing whether we should group these three companies.

3）. 其后接动词不定式时

Can you tell me whether to go or to stay?

4）. 如果从句中含有or或or not时，只能

用whether而不用if

vCould you tell me whether that’s a fast

train or not ?

vDo you know whether he is right or not ?

I don’t car ewhether he’ll stay hereor not