No matter how bright a talker you are, there are times when it’s better ______ silent. A.rem.

C

试题分析:无论你是多么健谈的人,总有些时候保持沉默更好。此题是no

matter

how引导的让步状语从句,而主句中又含有一个when引导的定语从句,从句中it是形式主语,而真正的主语是不定式结构to

be

silent。句型结构为:It

+

be

+

形容词

+

(of/for

sb.)+

动词不定式。

点评:动词不定式,动名词或主语从句作主语时,通常用it作形式主语,放到句首,将真正的主语放在后面,常见句型有:

1.

It

+

be

+

形容词+主语从句,如:

It

is

uncertain

whether

he

can

come

to

Jenny’s

birthday

party

or

not.

2.

It

+

be

+

名词词组

+

主语从句,这类名词有:a

fact,

a

pity,

a

shame,

an

honour,a

question等,如:

It’s

a

pity

that

you

missed

the

exciting

football

match.