原因狀語從句之歐陽術創(chuàng)編

1、歐陽術創(chuàng)編2021.02.02歐陽美創(chuàng)編2021.02.02歐陽術創(chuàng)編2021.02.02歐陽美創(chuàng)編2021.02.02二、原d NIf | n時間：2021.02.02創(chuàng)作：歐陽術1、定義：在句中用來說明壬句原因的句子叫原因狀培從句。2、常用引導詞：because（因為）,as（由于）,since （既然）,now （that）（既然）3、時態(tài)：原因狀培"、句一般部是根據(jù)實際情況選用適當?shù)臅r 態(tài)。通常是主ilUil,壬現(xiàn)從現(xiàn)。4、because, since 和 as 的區(qū)別:1）because引導的原因狀培卩、句一般赦于主句的后面，because 從句位于句首時要用逗號分開，故在

2、句末時，可不用逗號分開。 because表示直接原因，培氣最強，最適合回答why引導的疑 間句o because of也表示原因，但它后面不接”、句，只能接名詞, 代詞或動名詞。注意:because fH so不可同時出現(xiàn)在一個旬子里。 I do it because I like it. = I like it sol do it. Wc went by bus because it was cheape匚二 If was cheaper sowe went by bus. He can't go to school because of his illness.2）since引導的

3、原因狀培JJ、句一般赦于主句之前表示已知的、 顯然的理由（通常被翻譯成“既然?,= now that）,較為正式,語氣 比 because 弱 o Since you are free today, you had better help me with my mathematics. Since you don*t trust him, you should not employ him. Now （that） you are grown up, you should not rely on your parents.3）as引導原因狀培從旬時表示附帶說明的“雙方已知的原因"，含有

4、對比說明的意味，語氣比since弱，較為正式，位置 較為靈活（常放于主句之前）。 As it is raining, yoifd better take a taxi. As you are tired, you had better rest. I went to bed early, as I was exhausted4）for引導的是并列句表示原因但并不說明壬句行為發(fā)生的 直接原因，只提供一些蒲助性的補充說明，for引導的并列旬只 能放于主句之后并且必須用逗號將其與主句隔開。©He could not have seen me, for I was not thereHe s

5、eldom goes out now,for he is very old.5.三、目的狀語從句：1、定義：在旬中用來作目的狀語的旬子叫目的狀培從旬。2、常用引導詞：so that（以便）,in order that （以便）3、時態(tài)：目的狀語）J、句一般部是根據(jù)實際情況選用適當?shù)臅r 態(tài)。也通常是壬過從過，主現(xiàn)卩、現(xiàn)。4、目的狀培從句應注意HT：1）目的狀培從旬中常含有 can,could,may,might,should, will, would等情態(tài)動詞。I got up early so that I could catch the first bus.2）在口語中so可以引導目的狀語從

6、句。We*ll sit nearer the front so we can hear bette匚3）in order that 與 in order to 的區(qū)別: in order that + 從旬=so that + 從句 in order to+動詞原形二so as to +動詞原形（不放于句首） =to+動詞原形I get up early in order to catch the early bus.=I get up early in order that I can catch the early bus.0.結果狀培從句：1、定義:在旬中用來作結果狀語的旬子叫結果狀語從

7、句。2、常用引導詞:so. that（如此以致.）,such.that （JU此 以致）3、時態(tài)：結果狀培卩、句一般那是根據(jù)實際情況選用適當?shù)臅r 態(tài)。也通常是主ilUil,主現(xiàn)"、現(xiàn)。4、結果狀語從句的句型:結果狀培）J、句的從旬部分是補充說明主旬中謂語動詞發(fā)生的 結果的，通常位于壬旬之后。結果"、句中通常不用情態(tài)助動詞， 但must, can, could除外。結果狀培卩、句其規(guī)律由so與such的不 同詞性決定。such是形容詞，修術名詞或名詞詞組，so是副詞, 只能修飾形容詞或副詞。SO還可與表示數(shù)量的形容詞many, few, much, little連用，形成固定

8、搭配。6.1) so +形/副+ that從句©The boy isso young that he can't go to school.He speaks so fast that no one can catch him.2) so+ many/few ( + 復名)+ that 卩、句There are so many picture-story books that the boy won't leave.3) so+much/little ( +不可數(shù)名詞)+that R 句He gave me so little time that it was imp

9、ossible for me to finish the work on time.4) so+ 形 + a/an+ 單名 +that R 句It was so hot a day that they wanted to go swimming.5) such+ a/an+ 形 + 單名 + that 卩、句=so+ 形 + a/an+ 單名 + that U 旬He is such a young boy that he can*t go to school.=He isso younga boy that he can't go to school.6) such+形+復名/不可數(shù)

10、名詞+ that R句 They are such fine teachers that we all hold them in great respect It is such nice weather that I would like to go to the beach.5、結果狀培從句與簡單句的轉換：1）so. that （從句為肯定句）= 形/副 + enough + （for sb.） to do sth.He is so old that he can go to school alone=He is old enough to go to school alone2）so.

11、that （從句為否定句）=.too + 形 / 副 + （for sb.） to do sth.The problem is so hard that I caift work it out.=The problem is too hard for me to work out.=The problem isift easy enough for me to work out.五、it步狀培從句1、定義:在旬中用來表示“退一步說”的句子叫讓步狀培 從句。2、常用引導詞:although （雖然）二though （盡管，即使）,no matter+ U 間詞二疑間詞-ever （無論），eve

12、n if= even though （即 使）,whether. or .（不管是述是）等。3、時態(tài)：辻步狀培從句的時態(tài)一般采用主ilUil,主將卩、現(xiàn) 的原則。4、讓步狀培從句的注意點：1) although/ though不可與but連用(二者只選其一)，但可 與 still / yet 連用。©Although/Though he is very old, still he is quite strong.Although he was ill, he went to school = He was ill but he went to school.7.2) no matte

13、r+疑問詞二疑問詞-ever “無論”(引導讓步狀 培從句可互換)(DWhatever (= No matter what) happened, he would not mind.Whoever (= No matter who) you are,you must keep the law.©However (=No matter how) expensive it may be, Til take it.注意:-nomattersfri詞叫舌構只能引導It步狀培從句，而“疑 間詞-ever-3可以引導名詞性從句(主培從旬，賓培從旬,表培 從旬和同位語從句)o Til eat wh

14、atever (fno matter what) you give me.(whatever引導賓語從句)©Whoever (力io matter who) comes will bewelcome, (whoever引導主培從旬)穴、條件狀培從句1、定義：由引導詞if或unless引導的狀培從句叫做條件狀語 從句。2、常用引導詞:if（JDM,unless = if.not（如果不/ 除非）,so/as long as（只要）3、時態(tài):條件狀培"、句的時態(tài)常采用主將從現(xiàn)原則。 I will come to see you if I have time Let's

15、go out for a walk unless you are too tired.=Let's go out for a walk if you are not too tired.（§） You can1t learn English well unless you work hard.=You cairt leam English well if you don't work hard. You may borrow my book as long as you keep it clean.注意廣祈使旬，+and/or+簡單旬"是一個固定旬型，這里祈 便句相當于一個由if引導的條件狀用and引導的簡單句 常表示一個較好的結果，用01引導的簡單旬常表示一個不愉快 或不理想的結果；謂語動詞常用一般將來Wo fill: 祈使旬，and +簡單句（一般將來時）=If you do sth, you, 11 do sth. （這個句型表示“如果做到了祈使句表示的事情，就會有后面旬子 表示的結果”。）Think hard , and yoi