原因、目的和結(jié)果狀語從句(初中,精華課件).ppt

原因狀語從句,(1)原因狀語從句：從句表示的是主句行為的原因。通常由because, since, as, for引導。 (2) because表示直接原因（聽話人所不知的），語氣最強。 回答由why提出的問題，只能用because。此外，because和so不能同用在一個句子里。 例如：-Why arent going there? -Because I dont want to. since 相當于now that，“因為，既然， 鑒于” 表示顯然的或已為人知的理由，語氣較because弱 例如：Since the rain has stopped，lets go for a walk. 既然雨停了，我們出去散散步吧。,as和since語氣較弱，一般用來表示明顯的原因。 由as和since引導的原因狀語從句多放在句首。 例如 ：As he has no car, he cant get there easily. Since we have no money, we cant buy it. (4)for表示所說的理由是一種補充說明,for引導的從句一般不放在句子的開頭。如: I decided to stop and have lunch, for I was feeling quite hungry. Eg: 1. I was late for class yesterday _ there was something wrong with my bike. 2. He took off his coat _ he felt hot. 3._you cant answer the question, Ill ask someone else.,because,for,As/since,目的狀語從句,目的狀語從句: 從句表示的是主句行為的目的 通常由 so that, in order that（為了，以便）引導。 例: We started early so that we could catch the first train. We used the computer in order that we might save time. (2)so that可引導目的狀語從句，此時可用to或in order to替換,將其改為簡單句。 例如： He got up early so that he could get to school on time. =He got up early（in order） to get to school on time.,二、結(jié)果狀語從句,(1),結(jié)果狀語從句由,sothat, suchthat, so that,引導。,(2)sothat,語,such.that,可以互換。在由,so.that,引導的結(jié)果狀語從句中，,so,是副詞，與形容詞連用。,其結(jié)構(gòu)是,: “.so +,形容詞（副詞）,+ that +,從句,”,。,例如：,He was so glad that he couldnt say a word.,Mother lives so far away that we hardly ever,（幾乎不，從來不）,see her.,二、結(jié)果狀語從句,(1),結(jié)果狀語從句由,sothat, suchthat, so that,引導。,(2)sothat,語,such.that,可以互換。在由,so.that,引導的結(jié)果狀語從句中，,so,是副詞，與形容詞連用。,其結(jié)構(gòu)是,: “.so +,形容詞（副詞）,+ that +,從句,”,。,例如：,He was so glad that he couldnt say a word.,Mother lives so far away that we hardly ever,（幾乎不，從來不）,see her.,（3）so that既可引導目的狀語從句，又可引導結(jié)果狀語從句。區(qū)別這兩種從句的辦法有兩個： A)目的狀語從句里往往帶有情態(tài)動詞can, could, may, might等。 B)從意思上看，目的狀語從句往往表示的目的很明確，不放在句首。 例如： Speak clearly so that they may understand you. (目的狀語句) Jack is badly ill so that he has to rest. (結(jié)果狀語從句),練習： I hurried _I wouldnt be late for class. 2. We should go by bus _ we can get there earlier. 3. May I sit nearer_ I can see more clearly?,判斷以下句子是目的狀語從句還是條件狀語從句？,so that,so that,so that,so as to(肯定結(jié)構(gòu)) eg. He got up early so as to catch the early train. so as not to(否定結(jié)構(gòu)) eg. He got up early so as not to miss the early train. to eg. He got up early to catch the early train. in order that eg. He got up early in order that he could catch the early train. in order to eg. He got up early in order to catch the early train.,用于目的狀語從句，還有：,結(jié)果狀語從句,(1)結(jié)果狀語從句由sothat, suchthat, so that引導。 (2)sothat與 such.that可以互換。在由so.that引導的結(jié)果狀語從句中，so是副詞，與形容詞連用。其結(jié)構(gòu)是: “.so + 形容詞（副詞）+ that + 從句”。 例： He was so glad that he couldnt say a word. Mother lives so far away that we hardly ever（幾乎不，從來不） see her.,（2）在由suchthat引導的結(jié)果狀語從句中，such是形容詞，它修飾的可以是單數(shù)或復數(shù)可數(shù)名詞，也可以是不可數(shù)名詞；其結(jié)構(gòu)是: “.such +a / an + 形容詞+名詞+ that + 從句”。 例如： 1.It was such a hot day that nobody wanted to do anything. 2.He had such long arms that he could almost touch the ceiling.（天花板） 有時上述兩種結(jié)構(gòu)是可以互換的。 例如： It was such a wonderful film that all of us wanted to see it again. =The film was so wonderful that all of us wanted to see it again.,(3)如果名詞前由many, much, little, few等詞修飾時，只能用so, 不用such。 例如： A.Soon there were so many deer that they ate up all the wild roses. B.He has so little time that he cant go to the cinema with you. (4)如果主從句的主語相同，并且從句是否定的形式，可以用too.to.句型轉(zhuǎn)化。 例如： He was so excited that he couldnt go to sleep that night. = He was too excited to go to sleep,5)如果主從句的主語相同，但從句是肯定的形式，可以用adj.+ enough替換。 例如：他夠大了，可以去上學。 He is so old that he could go to school. = He is old enough to go to school. 練習：1.It is _ hot in the room _ we have to go out for a walk. 2.It was_a wonderful movie_all of us wanted to see it again. 3.There was_little water in the bottle _ the bird couldnt reach it.,so that,such that,such that,強化練習 一、單項選擇。 1Well stay at home if it _ tomorrow. Arain Brains Cis raining Dwill rain 2We didnt go home _ we finished the work. Asince Buntil Cbecause Dthough 3She _ when I went to see her. Ais reading Bhave read Cwas reading Dreads 4_ the rain stops, well set off for the station. ABefore BUnless CAs soon as DThough 5She looks forward every spring to _ the flower gar