as的用法小结

2)as(so)long as 和……一样长(原级比较);只要(引导条件状语从句)

3)as well as和……一样好;既……也……(连接并列成分)

4)as good as和……一样好;事实上(作状语)

as if可用as though替换，在此引导表语从句，另外它们也可引导状语从句，从句既可用陈述语气，也可用虚拟语气。如：

①It looks as if /though it’s going to rain.(陈述语气)

②You look as if you’d seen a ghost.(虚拟语气)

as is the case with = as with ……就和……的情况一样

As is the case with his mother, he is fond of music. 跟母亲一样，他喜欢音乐。

As with human, animals also love their babies. 同人一样，动物也爱它们的幼仔。

as good as

as good as 作为固定词组意为“几乎一样”，“实际上等于”，作为同级比较结构，意为“和……一样好”。如：

①He is as good at English as me.②My bike is as good as yours.

…as it is

该固定词组表达意思是“就以(现在)这个样子，”“根据现在的情况”。

如：He decided to buy the house as it is.

as long as/so long as只要

(1)引导条件状语从句

You may borrow the book as / so long as you keep it clean. 只要你不把书弄脏，你就可以借。

You will succeed so long as you work hard. 只要你努力就会成功。

As long as you study hard, you’ll make great progress. 只要你努力学习，你就会取得很大进步。

(2)和……一样长

This rope is as long as that one.这条绳子和那条一样长。

This bridge isn’t so/as long as that one.这座桥和那座不一样长。

(3)长达……(表时间)

The old couple have been living in the small town as long as 50 years.这对老夫妇已在这个小城镇里住了长达50年。

as well/ as well as

as well 表示“也”，是副词短语，用作状语，通常放在句末，也可放在主语之后，相当于too,但一般无标点符号与句子隔开.as well as 通常看作一个复合并列连词,连接两个成分相同的词、短语或句子，表示“既……又……，不但……而且……”当它连接两个主语时，谓语动词的人称和数要与第一个主语保持一致。如：

The children learn to read, write and they play games as well.孩子们学习读书写字，他们也做游戏。

With television,we can see a picture as well as hear sound.利用电视,我们既能听到声音,又能看到图像.

Tom,as well as his parents,likes pop music.汤姆以及他的父母都喜欢流行音乐。

不起眼单词的超大用途，as的用法全解析

、介词as

1.好像

They entered the building disguised as cleaners.

他们伪装成清洁工进入了大楼。

2.作为;当作

I respect him as a writer and as a man.

我尊重他这位作家，也尊重他这个人。

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