初中英語狀語從句知識點總結(jié)

1、精選優(yōu)質(zhì)文檔-傾情為你奉上初中英語狀語從句知識點總結(jié)(一用來修飾主句中的動詞,形容詞或副詞等而充當(dāng)狀語的從句叫做狀語從句。狀語從句常用從屬連詞來引導(dǎo),與主句連接起來。若置于句末,則前面不加逗號。根據(jù)意義和作用,狀語從句可分為時間原因條件等幾種。下面我們就來分析一下這幾種狀語從句。1時間狀語從句時間狀語從句常用從屬連詞when,after,until,as soon as,等來引導(dǎo)。當(dāng)主句是祈使句或謂語動詞是一般將來時態(tài)或情態(tài)動詞時,其時間狀語從句中的謂語動詞常用一般現(xiàn)在時態(tài)表示將來發(fā)生的動作或存在的狀態(tài)。這就是我們常說的“主將從現(xiàn)”。如:Please call me when you get

2、there.當(dāng)你到那時,請給我打個電話。I will write to you as soon as I arrive in Beijing.我一到北京就給你寫信。<溫馨提示>since引導(dǎo)時間狀語從句表示“自從以來”,從句中的動詞一般表示動作的起點,用過去時;而主句的動作延續(xù)的情況則用一般現(xiàn)在時或現(xiàn)在完成時。常用的句型為:It has been/is+一段時間+since+過去時。如:I has been/is three years since we met last time.自從我們上次見面,已經(jīng)三年了。2條件狀語從句引導(dǎo)條件狀語從句的連詞或詞組有:if(如果,unless

3、(除非,as long as(只要等。如果主句是將來時,條件狀語從句也用一般現(xiàn)在時來表示。如:I will stay at home if it rains tomorrow.如果明天下雨,我就待在家。You cant learn English well unless you wo rk hard.除非你努力學(xué)習(xí),否則是學(xué)不好英語的。<溫馨提示>由if引導(dǎo)的條件狀語從句,若從句表達(dá)的是與現(xiàn)在事實相反的事實,則常用虛擬語氣,即用過去時態(tài)表示(如果涉及到be動詞,一律都用were。此時,主句則用過去將來時。如:If I had enough money,I would buy it

4、for you.如果我又足夠的錢,我將把它買給你。I wouldnt do it if I were you.如果我是你,我是不會做的。3原因狀語從句because,since,as,for都可用來引導(dǎo)原因狀語從句,那么它們又有哪些區(qū)別呢?because用來表示“造成某種結(jié)果的直接原因”,語氣較濃,常用來回答why提出的問句。如:-Why are you late?-Because my bike is broken.as和since用來表示“看的到的或是不說也知道的原因”,since也可譯作:“既然”。如:As he is old enough,let him do it.他既然長大了,就讓

5、他干吧!Since his sho es are worn out,lets buy him a new pair.既然他的鞋壞了,那我們就給他買雙新的吧。for引導(dǎo)的原因狀語從句不置于句首,常用來表示“順便提及的理由”,只是稍帶說明原因,并非強(qiáng)調(diào)。如:I must stay here,for its raining so hard.我必須得待在這兒,因為雨下的很大。初中英語狀語從句知識點總結(jié)(二1狀語從句在復(fù)合句中,修飾主句中的動詞、形容詞或副詞等的從句叫狀語從句。狀語從句根據(jù)它表達(dá)的意思可分為時間、地點、原因、目的、結(jié)果、讓步、比較(或方式和條件等類。1.時間狀語從句引導(dǎo)連詞有when,w

6、hile,till,notuntil,since,after ,before ,as soon asThe bus wont start until everybody gets on.公共汽車直到每人都上車為止,才開動。When he knocked at the door I was cooking.當(dāng)他敲門時,我正在煮飯。Last night before he came back home, his wife had already cooked dinner and waited for 2 hours.昨天晚上在他回到家之前,他的妻子已經(jīng)做好晚飯足足等了他兩小時之久。After I

7、 went to church, I went shopping.2. 地點狀語從句地點狀語從句通常由where, wherever 引導(dǎo)。Where there is a will, there is a way. 哪里有志向,哪里就有出路。有志者事竟成。Where there is a life, there is a hope. 哪里有生命,哪里就有希望。留得青山在,不怕沒柴燒。Wherever you go, whatever you do, I will be right here waiting for you.不管你去哪里,不管你做什么,我都會在此守侯你。3.原因狀語從句引導(dǎo)連詞

8、有because,as, since。He didnt see the film because he had seen it.他沒有看那部電影,因為他已經(jīng)看過了。They couldnt get on the train,for it was too crowed.比較:because, since, as和for1because語勢最強(qiáng),用來說明人所不知的原因,回答why提出的問題。當(dāng)原因是顯而易見的或已為人們所知,就用as或 since。I didn't go, because I was afraid.Since /As the weather is so bad, we ha

9、ve to delay our journey.2由because引導(dǎo)的從句如果放在句末,且前面有逗號,則可以用for 來代替。但如果不是說明直接原因,而是多種情況加以推斷,就只能用for。He is absent today, because / for he is ill.He must be ill, for he is absent today.注意because不能和so 連用。4. 目的狀語從句引導(dǎo)連詞有 that,so that,in order that。He must get up early so that he can catch the first bus.他必須早起,

10、以便能趕上第一輛公共汽車。He repainted the house so that he could welcome the guests.Millions of trees are planted in North China so that the sand can be stopped from moving south.The mother left work earlier in order that she could be at home when the children arrived.So that 以便/以致例如:(1They studied hard so that

11、 they could pass the exam.(2They started early so that they caught the early bus.注意點:在例句(1中,是引導(dǎo)目的狀語;在例句(2中,是引導(dǎo)結(jié)果狀語。一般來講,從句中含有情態(tài)動詞的,為目的狀語。無情態(tài)動詞的,為結(jié)果狀語。5.結(jié)果狀語從句引導(dǎo)連詞有that,sothat,such.thatThe box is so heavy that I cant lift it.這個盒子如此沉,以致我無法抬起來。such+名詞性詞組+thatSo+形容詞/副詞+that如此以致例如:(1She is such a good te

12、acher that we all love her.(2It was such a hot day that they didnt go out for a walk as usual.注意點:1.such+a+形容詞+名詞+that,可以改寫成:so+形容詞+a+名詞+that,例句(1可以改寫成:She is so good a teacher that we all love her.2.在such+形容詞+名詞復(fù)數(shù)或不可數(shù)名詞+that結(jié)構(gòu)中,形容詞如果是many/few或much/little時,用so不用such,即:so+many/few+可數(shù)名詞復(fù)數(shù)+that,so+much

13、/little+不可數(shù)名詞+that(1There are so many people in the room that I cant get in.(2The man has so much money that he can buy a car.6.讓步狀語從句引導(dǎo)連詞有though,although; even though/if; whatever; howeverAlthough he is young,he knows a lot of things.雖然他年齡小,但卻認(rèn)識許多事物。Even though you dont like him, you still have to

14、be polite.Whatever you say, I will not change my mind.注意although,though不能和but連用。7.比較(方式狀語從句以than為引導(dǎo)連詞。常見連詞(asas., than; the, theJim is older than Lucy（is）. 吉姆比路希年長。 Skiing is more exciting than running. The more you practice, the more knowledge you will get. 注意 than 引導(dǎo)的比較狀語從句中的謂語常省略。 8.條件狀語從句以 if, unless 為引導(dǎo)連詞。 If you eat bad food，you may be ill. 如果你吃到壞了的食物，就會生病。 If it doesnt rain tomorrow, we will have a sport