大学英语：形容词+不定式

①名词或代词作主语

Many parents are unable to stand up to their children’s unreasonable demands.

You are bound to vacillate at times.

以上这类形容词几乎总是与不定式连用。

还有一些表示人的情绪或愿望的形容词既可与不定式连用也可与介词词组或名词从句连用。

The boy is afraid to go out after dark.

I’m glad to see you in my country.

He’s ashamed to tell you what really happened.

I’m sorry to break the news to you.

另有一类形容词与含有被动意思的不定式连用，说明主语的情况。

The material is easy to wash.

He is difficult to get along with.

形容词前可加too,后可加enough。

You’re too pretty to be so heavy.

He thinks he is old enough to manage his own affairs.②不定式作主语的两种形式

（a）It is + adj.(+ for sb. / sth.)+ to do sth.

常用于此句型的形容词有：common,dangerous,difficult,easy,important,(un)necessary,(im)possible等。

(b)It is + adj. + of sb. to do sth.

常用于此句型的形容词有：brave,careless,clever,generous,good,kind,mean,stupid,wise等。

Was it possible for the writer to get his diaries out of Berlin safely?

It is difficult for media celebrities to pass through a crowd without being recognized.

③形容词 +  名词从句

许多形容词可用于此句型，如afraid,angry,anxious,aware,certain,confident,glad,happy,pleased,proud,sad,sorry,sure,surprised,unaware等。

He felt terribly sorry that he had given the millionaire a pound.

He was afraid that the millionaire would think him foolish.

名词从句也可作主语。

It is too bad that you missed your flight.

It seems possible that peace will be restored in that country by the end of the year.