3. He talks as if (as though) he knew all about it.

2. The more I can do for the class, the happier I’ll be.

1. Child as she is, she knows a lot of things.

3．　 在状语从句中的省略

1)　 在结果、目的状语从句so…..that,such…..that中

例：I got up early so(that)I could catch the early bus.

　 =I got up early (so) that I could catch the early bus.

2)　 在比较状语从句中

例：My elder sister is a head taller than I (am tall).

The weather in autumn in beijing is better than (the weather) in spring (in Beijing).

3)　 在时间、条件、让步、方式等状语从句中(即由when，though，as if，if等引导的从句)，如果从句中的谓语有“be”，从句中的主语又和主句的主语相同或是it时，往往把从句中的主语和be都省略。

例：If (it is) necessary possible,the boss will go by himself.

When (he was) in trouble,he always asked me to help.

Though (they were) surrounded,the soldiers didn’t give up.

2．　 在定语从句中的省略

1)　 关联词在定语从句中担任宾语时可以省略。

例：This is the book (which/that) I want to buy.

The man (that/who/whom) you visited last night is my grandpa.

The music (that/which) you are listening to is very beautiful.

2)　 关系副词that在定语从句中常代替when，而且可以省略。

例：1989 was the year (when/that0 he was born.

3)　 关联词在从句中作表语时可以省略。

例：She is no longer the girl (that/who) she used to be.

1．　 在宾语中从句中的省略

例：The letter says (that) they are ready for it.

We hope (that) we can win.

例：Why not watch TV?

=Why don’t we watch TV?

2．在词组be able to，used to，be going to和情态动词ought to，have to，need等词后。

例：He never goes there by bus now but he used to (go there by bus).

I’ve not been to America but I am going to (be there ).

1．为了避免重复，再次出现时，在want，wish，hope，try，plan，like，love，hate后，往往只保留不定式符号to，而省略后面的动词。

例：A:Would you like to join us in the game?

B:I’d like/love to.

A:Did you go to Shanghai last month?

B:No,I planned to (go to Shanghai last month).

例：A:Would you like to do it with me?

B:Sure/Certainly/Of course.(I’d like to)