set up、as usual等重点短语

set up、as usual等重点短语知识点包括set up、as usual、 as if、nothing but、tens of thousands of、dig out等部分，有关set up、as usual等重点短语的详情如下：

set up 设立；建立

[典型例句]

They set up a special committee to look into the matter.

他们设立了一个专门的委员会来调查此事。

They decided to set up a new school.

他们决定建一所新学校。

[思维拓展]

set off 出发；动身；开始

set out 出发；动身

set about (doing sth.) 开始(做某事)

as usual 像往常一样

[典型例句]

He would go home，as usual，for Christmas.

他像往常一样回家过圣诞节。

 I shall leave the office at the same time as usual.

我将在和平时一样的时间离开办公室。

as if 似乎；好像；仿佛

[典型例句]

The child talked to us as if he were a grown­up.

那孩子跟我们谈起话来，像个大人似的。

She left the room hurriedly as if she was angry.

她匆忙离开了房间，好像很生气的样子。

It looks as if it will rain before long.

看起来一会儿就要下雨了。

[思维拓展]

as if＝as though仿佛；好像

even if＝even though即使

注意：若as if引导的从句可能是真实的事或情形时，用陈述语气；若与事实相反或不符，通常用虚拟语气。表示与现在事实相反，从句谓语动词用过去时，be动词用were；表示与过去事实相反时，从句谓语动词用过去完成时，表示与将来事实相反，谓语动词用would/could/might＋动词原形。

(1)as if/as though 引导表语从句时，如果是客观的事实，用真实的语气；如果是不可能发生的事，只是一种想象、猜测，则用虚拟语气。

The clouds are gathering.It looks as if it is going to rain.

乌云密布，天看起来像要下雨了。

It looks as if the sky were falling down.

天看起来好像要塌下来似的。

(2)as if/as though 引导方式状语从句，要用虚拟语气。

He talks as if he were the owner of the world.(与现在事实相反，be动词用were)

他说起话来好像他主宰这个世界似的。

He talks as if he had been to the moon.(与过去事实相反，从句谓语动词用过去完成时)

他说起话来好像他去过月球似的。

She talks and talks as if she would never stop.(与将来事实相反，从句谓语动词用would＋动词原形)

她说呀说呀，好像永远也说不完。

(3)as if引导方式状语从句时可用省略形式，后面接名词、形容词、副词和介词短语，也可跟分词或不定式。如：

He talks as if a philosopher.

他说起话来就好像是一个哲学家似的。

The lady cried and laughed as if mad.

这位女士哭了又笑，好像疯了。

Tom dropped his head and didn't dare say a word, as if not knowing the answer.

汤姆低垂着头不敢说话，好像不知道答案。

He talks as if drunk.

从他谈话的样子来看，他像是醉了。

Tom opened his mouth as if to say something.

汤姆张开嘴好像要说什么。

nothing but 除......外什么也没有；只有；仅仅

[典型例句]

For miles and miles I could see nothing but a great fire and lots of smoke.

一连好几英里，除了大火和浓烟我什么也看不见。

He did nothing but sleep all day long.

他什么也不干，成天睡觉。

I can do nothing but obey it.

我只能服从。

[思维拓展]

anything but绝不，根本不

I was anything but happy about going.

我一点也不愿意出去。

tens of thousands of 数以万计的

[典型例句]

Tens of thousands of people were watching the game in the stadium when it began to rain.

数以万计的人正在体育馆看比赛，这时天突然下起雨来。

[误区警示]

thousand, hundred等前有具体数字时不用复数，后接名词时不用of；但如果是表示不确定的数目，即表示“概数”时，用复数形式，且后跟of。如：

two hundred students 两百名学生

hundreds/thousands of...数以百计/千计的……

[思维拓展]

hundreds of数以百计的　　　thousands of数以千计的

dozens of许多；大量  scores of许多；大量

millions of数以百万计的

hundreds and hundreds of成百上千的

hundreds of thousands of成千上万的

 dig out 掘出；发现

[典型例句]

They dug out an old vase.

他们挖出了一个旧花瓶。

I tried to dig out the truth.

我设法探出真相。

[思维拓展]

dig into 挖掘；深入钻研

dig up 找出；查明