as 和what引導(dǎo)定語(yǔ)從句
as 和what引導(dǎo)定語(yǔ)從句篇一
由as, which 引導(dǎo)的非限定性定語(yǔ)從句,as和which可代整個(gè)主句,相當(dāng)于and this或and that。As一般放在句首,which在句中。
As we know, smoking is harmful to one's health.
The sun heats the earth, which is very important to us.
典型例題
1)Alice received an invitation from her boss, ___came as a surprise.
A. it B. that C. which D. he
答案C. 此為非限定性從句,不能用 that修飾,而用which.,it 和he 都使后句成為句子,兩個(gè)獨(dú)立的句子不能單以逗號(hào)連接。況且選he句意不通。
2)The weather turned out to be very good, ___ was more than we could expect.
A. what B. which C. that D. it
答案B。which可代替句子,用于非限定性定語(yǔ)從句,而what不可。That 不能用于非限定性定語(yǔ)從句,it不為連詞,使由逗號(hào)連接的兩個(gè)句子并在一起在英語(yǔ)語(yǔ)法上行不通。
3)It rained hard yesterday, ____ prevented me from going to the park..
A. that B. which C. as D. it
答案B.
as 和which在引導(dǎo)非限制性定語(yǔ)從句時(shí),這兩個(gè)關(guān)系代詞都指主句所表達(dá)的整個(gè)意思,且在定語(yǔ)從句中都可以作主語(yǔ)和賓語(yǔ)。但不同之處主要有兩點(diǎn):
(1) as 引導(dǎo)的定語(yǔ)從句可置于句首,而which不可。
(2) as 代表前面的整個(gè)主句并在從句中作主語(yǔ)時(shí),從句中的謂語(yǔ)必須是系動(dòng)詞;若為行為動(dòng)詞,則從句中的關(guān)系代詞只能用which.。
在本題中,prevent由于是行為動(dòng)詞,所以正確選項(xiàng)應(yīng)為B。
As 的用法
例1. the same… as;such…as 中的as 是一種固定結(jié)構(gòu), 和……一樣……。
I have got into the same trouble as he (has).
例2. as可引導(dǎo)非限制性從句,常帶有'正如'。
As we know, smoking is harmful to one's health.
As is know, smoking is harmful to one's health.
As是關(guān)系代詞。例1中的as作know的賓語(yǔ);例2中,它充當(dāng)從句的主語(yǔ),謂語(yǔ)動(dòng)詞know要用被動(dòng)式。
as 引導(dǎo)定于從句:
1、as用作關(guān)系代詞和關(guān)系副詞引導(dǎo)限定性定語(yǔ)從句,并在從句中做主語(yǔ)、表語(yǔ)和狀語(yǔ),構(gòu)成the same ...as, such...as等結(jié)構(gòu)。(此題為此應(yīng)用)
2、as引導(dǎo)非限定性定于從句。as在定于從句中作主語(yǔ)、表語(yǔ)或賓語(yǔ),這個(gè)定于從句說明整個(gè)句子,可以放在主句之前。如:As we all know, he studies very hard.
關(guān)系代詞as和which的區(qū)別
、俣叨伎梢砸龑(dǎo)非限制性定語(yǔ)從句,用來(lái)修飾或限制整個(gè) 主句的內(nèi)容,有時(shí)可以互換使用。
【例】
He is a foreigner,as/which I know from his accent.
從他的口音我知道他是個(gè)外國(guó)人。
、诙ㄕZ(yǔ)從句放在句首時(shí),只用as,不能使用which。
【例】
AS anybody can see,a computer can do almost everything people can.
正如人人所見,計(jì)算機(jī)幾乎可以做人能做的一切事。
、郛(dāng)非限制性定語(yǔ)從句為否定句時(shí),常使用which引導(dǎo)。
【例】
Mr Zhang usually criticizes Mary in public, which shedoesn't like at all.
張老師經(jīng)常在公開場(chǎng)合批評(píng)瑪麗,這是她根本不喜歡的。
、墚(dāng)非限制性定語(yǔ)從句的謂語(yǔ)是一個(gè)復(fù)合結(jié)構(gòu)時(shí),常使用which引導(dǎo)。
【例】
Little Bob always tells a lie,which his parents find strange.
小鮑勃總是說謊,這使他的.父母感到很吃驚。
、莓(dāng)as在從句中作主語(yǔ)時(shí),后面的謂語(yǔ)動(dòng)詞常常使用被動(dòng)語(yǔ)態(tài);如果從句中是主動(dòng)語(yǔ)態(tài),一般多使用which。
【例】
She has been late again,as was expected.
她又遲到了,這在意料之中。
Tom made great Progress in Chinese,whlch made us delighted.
湯姆的中文取得了很大的進(jìn)步,這使我們很高興。
as 和what引導(dǎo)定語(yǔ)從句篇二
as, which 非限定性定語(yǔ)從句
由as, which 引導(dǎo)的非限定性定語(yǔ)從句,as和which可代整個(gè)主句,相當(dāng)于and this或and that。As一般放在句首,which在句中。
As we know, smoking is harmful to one's health.
The sun heats the earth, which is very important to us.
典型例題
1)Alice received an invitation from her boss, ___came as a surprise.
A. it B. that C. which D. he
答案C. 此為非限定性從句,不能用 that修飾,而用which.,it 和he 都使后句成為句子,兩個(gè)獨(dú)立的句子不能單以逗號(hào)連接。況且選he句意不通。
2)The weather turned out to be very good, ___ was more than we could expect.
A. what B. which C. that D. it
答案B。which可代替句子,用于非限定性定語(yǔ)從句,而what不可。That 不能用于非限定性定語(yǔ)從句,it不為連詞,使由逗號(hào)連接的兩個(gè)句子并在一起在英語(yǔ)語(yǔ)法上行不通。
3)It rained hard yesterday, ____ prevented me from going to the park..
A. that B. which C. as D. it
答案B.
as 和which在引導(dǎo)非限制性定語(yǔ)從句時(shí),這兩個(gè)關(guān)系代詞都指主句所表達(dá)的整個(gè)意思,且在定語(yǔ)從句中都可以作主語(yǔ)和賓語(yǔ)。但不同之處主要有兩點(diǎn):
(1) as 引導(dǎo)的定語(yǔ)從句可置于句首,而which不可。
(2) as 代表前面的整個(gè)主句并在從句中作主語(yǔ)時(shí),從句中的謂語(yǔ)必須是系動(dòng)詞;若為行為動(dòng)詞,則從句中的關(guān)系代詞只能用which.。
在本題中,prevent由于是行為動(dòng)詞,所以正確選項(xiàng)應(yīng)為B。
As 的用法
例1. the same… as;such…as 中的as 是一種固定結(jié)構(gòu), 和……一樣……。
I have got into the same trouble as he (has).
例2. as可引導(dǎo)非限制性從句,常帶有'正如'。
As we know, smoking is harmful to one's health.
As is know, smoking is harmful to one's health.
As是關(guān)系代詞。例1中的as作know的賓語(yǔ);例2中,它充當(dāng)從句的主語(yǔ),謂語(yǔ)動(dòng)詞know要用被動(dòng)式。
【as 和what引導(dǎo)定語(yǔ)從句】相關(guān)文章:
定語(yǔ)從句教學(xué)設(shè)計(jì)08-26
定語(yǔ)從句的教學(xué)設(shè)計(jì)08-26
英語(yǔ)定語(yǔ)、狀語(yǔ)從句習(xí)題09-20
初中定語(yǔ)從句教學(xué)設(shè)計(jì)08-26
定語(yǔ)從句講解教學(xué)設(shè)計(jì)08-26
定語(yǔ)從句初中教學(xué)設(shè)計(jì)08-26
定語(yǔ)從句復(fù)習(xí)教學(xué)設(shè)計(jì)08-27
備考GMAT語(yǔ)法:what從句10-11