as as的用法總結(jié)有哪些
以下是小編為大家整理的as...as的用法總結(jié),希望能幫助大家更好地認(rèn)識(shí)as...as這個(gè)詞組,提高英語(yǔ)水平。
一、基本意思為“與…一樣”,其中的第一個(gè)as為副詞,其后通常接形容詞或副詞(用原級(jí)),第二個(gè)as可用作介詞(后接名詞或代詞)或連詞(后接從句)。使用時(shí)應(yīng)注意以下幾點(diǎn)。如:
(1) 在否定句中,第一個(gè) as 也可換成 so。如:
He doesn’t study as [so] hard as his brother. 他學(xué)習(xí)不如他弟弟努力。
(2) 在該結(jié)構(gòu)的兩個(gè)as之間通常接形容詞或副詞的原級(jí),但若涉及數(shù)量或程度,可用“as much+不可數(shù)名詞+as”和“as many+復(fù)數(shù)名詞+as”。如:
I haven’t got as much money as I thought. 我不像原來(lái)想像的有那么多錢。
You’ve made as many mistakes as I have. 你犯的錯(cuò)誤和我犯的一樣多。
其間接形容詞時(shí),有時(shí)該形容詞還可修飾另一名詞,但這個(gè)名詞應(yīng)帶有不定冠詞(注意詞序)。如:
She is as good a teacher as her mother. 她和她媽媽一樣是位好老師。
也可說(shuō)。如:She is a teacher as good as her mother.
但不說(shuō)。如:She is as a good teacher as her mother. / They are as good teachers as us.
(3) 該結(jié)構(gòu)根據(jù)情況可用使用以下修飾語(yǔ)。如:(not) nearly, almost, just, nothing like, exactly, not quite, half, one-ten, twice, three times, 30 per cent等,并且這些修飾語(yǔ)必須置于第一個(gè)as之前,而不能置于其后。如:
He doesn’t play half as well as his sister. 他演奏的水平不及他姐姐的一半。
This dress is twice as expensive as that. 這件連衣裙比那件貴一倍。
(4) 第二個(gè)as后接從句時(shí),該as通常為連詞,但有時(shí)這個(gè)as還充當(dāng)其后從句的主語(yǔ)或賓語(yǔ),此時(shí)該as實(shí)為關(guān)系代詞。如:
I gave him as much as he could eat. 他能吃多少,我就給了他多少。
We’ve got food for as many people as want it. 我們的食物,無(wú)論多少人吃都?jí)蛄恕?/p>
(5) 若第二個(gè)as引導(dǎo)一個(gè)表示將來(lái)意義的從句,則該從句可用現(xiàn)在時(shí)表示將來(lái),也可直接使用將來(lái)時(shí)態(tài)。如:
We’ll get there as soon as you do [will]. 你一到,我們就到。
(6) 在非正式場(chǎng)合(尤其是美國(guó)英語(yǔ)中),有時(shí)可以省略第一個(gè)as。如:
When over forty, he married a woman poor as himself. 他在40多歲時(shí)娶了一個(gè)像他本人一樣窮的女人。
另外,若意思明確,有時(shí)可省略第二個(gè)as及其后的相關(guān)詞語(yǔ)。如:
The radios in that shop will be cheaper, but not as good. 那家商店的收音機(jī)會(huì)便宜些,但質(zhì)量沒(méi)那么好。
二、“as + 形容詞或副詞原級(jí) + as…” 意為“和……一樣”,表示同級(jí)的比較,但要注意第一個(gè) as 為副詞,第二個(gè) as 為連詞。根據(jù)比較對(duì)象和性質(zhì)的不同又可以把此種結(jié)構(gòu)分為三種:
(一)“ as … as …結(jié)構(gòu)”用于表示不同人或物同一性質(zhì)的比較,意為“……和……一樣…… " 。例如
The tree is as tall as the building(is) .
這棵樹(shù)和那棟樓一樣高。
注意此結(jié)構(gòu)也常用于形象比喻中: as cool as cucumber 沉著的, as stubborn as a mule 非常頑強(qiáng)的,倔強(qiáng)的, as clear as crystal 非常透明的, as poor as a church mouse 非常貧困的, as busy as a bee 像蜜蜂一樣忙碌, as easy as ABC 像 ABC 一樣容易, as deep as a well 像井一樣深, as light as a feather 像羽毛一樣輕, as soft as butter 像黃油一樣軟。這些短語(yǔ)生動(dòng)活潑,淺顯易懂,記住這些短語(yǔ)可以提高學(xué)生的英語(yǔ)寫(xiě)作和口語(yǔ)能力。
(二)“ as … as …結(jié)構(gòu)”用于表示同一個(gè)人或物不同性質(zhì)的比較,意為“既……又……” 。例如:
This swimming pool is as wide as it is long.
這個(gè)游泳池寬度和長(zhǎng)度相等。
(三)“ as … as …結(jié)構(gòu)”用于表示兩個(gè)人或物不同性質(zhì)的比較,表示程度相同或相當(dāng),意為“……而……”。在否定句中結(jié)構(gòu)是“ so/as…as… ”。例如:
He was as experienced as his brother was green .
他經(jīng)驗(yàn)豐富,而他兄弟卻涉世未深。
He was as handsome as his wife was beautiful .
他長(zhǎng)得非常英俊,他的妻子也長(zhǎng)得非常漂亮。
He cannot run so/as fast as you.
他沒(méi)你跑得快。
Danny is not so/as wise as he is witty .
丹尼為人風(fēng)趣,但欠明智。
需要注意的是: “as + 形容詞或副詞原級(jí) + as…” 結(jié)構(gòu)的變體形式是“ as + 形容詞 + a + 單數(shù)名詞 + as 或 as + many/much + 名詞 + as ”。意為“……和……一樣…… " 。例如:
I don't want as expensive a car as this. = I don't want a car as expensive as this .
我不要這么貴的汽車。
This is as good an example as the other is.
這個(gè)例子和另外一個(gè)例子一樣好。
Tony is as clever a boy as his brother .
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