正如打扫房屋一样，我们也要扫除我们头脑中落后的东西。

2)as if,as though

两者的意义和用法相同，引出的状语从句谓语多用虚拟语气，表示与事实相反，有时也用陈述语气，表示所说情况是事实或实现的可能性较大。汉译常作"仿佛……似的"，"好像……似的"，例如：

They completely ignore these facts as if(as though)they never existed.

他们完全忽略了这些事实，就仿佛它不存在似的。(与事实相反，谓语用虚拟语气。)

He looks as if(as though)he had been hit by lighting.

他那样子就像被雷击了似的。(与事实相反，谓语用虚拟语气。)

It looks as if the weather may pick up very soon.

看来天气很快就会好起来。(实现的可能性较大，谓语用陈述语气。)

说明：as if/as though也可以引导一个分词短语、不定式短语或无动词短语，例如：

He stared at me as if seeing me for first time.

他目不转睛地看着我，就像第一次看见我似的。

He cleared his throat as if to say something.

他清了清嗓子，像要说什么似的。

The waves dashed on the rocks as if in anger.

波涛冲击着岩石，好像很愤怒。

八、英语六级语法常考知识点：不定代词

would rather do

would rather not do

would rather…than…宁愿……而不愿。

还有would sooner,had rather,had sooner都表示"宁愿"、"宁可"的意思。

If I have a choice,I had sooner not continue my studies at this school.

I would rather stay here than go home.=I would stay here rather than go home.

典型例题

----Shall we go skating or stay at home?

----Which do?

A.do you rather　B.would you rather C.will you rather D.should you rather

答案B。本题考查情态动词rather的用法，would rather+do sth意为"宁愿"，本题为疑问句，would提前，所以选B。

*不定代词

1)不定代词有

all,both,every,each,either,neither,more,little,few,much,many,another,other,some,any,one,no以及some,something,anything,everything,somebody,someone,anybody,anyone,nothing,nobody,no one,none,everybody,everyone.等。

2)不定代词的功能与用法

a.除every和no外不定代词既可用作名词，也可用作形容词。every和no在句中只能作定语。

I have no idea about it.

b.all都，指三者以上。

all的主谓一致：all的单复数由它所修饰或指代的名词的单复数决定。

All goes well.一切进展得很好。

all通常不与可数名词单数连用，如：不说all the book，而说the whole book。

但all可与表时间的可数名词单数连用，如all day，all night，all the year;但习惯上不说all hour，all century。

all还可以与一些特殊的单数名词连用，如all China，all the city，all my life，all the way