精锐教育学科教师讲义学员编号： 年 级： 课 时 数：学员姓名： 科目： 学科教师： 授课类型C (原因状语从句)C（结果状语从句）C（目的状语从句）授课日期时段教学内容一、专题精讲 原因状语从句because（因为） since=now that（既然）, as（由于）1）引导词 2）辨析 because>since>as (语气强弱)※because表示直接原因，语气最强；直接 回答why提问；多放在主句之后 —Why were you late? 你为什么迟到了？—Because my bike was broken. 因为我的自行车坏了※since 表示已知的，显然的理由；较正式；语气比because弱；常放在主句之前 As he has no money, he can’t afford the house.因为他没钱，所以他买不起这幢房子。
※as 表示附带说明的“双方已知的原因”；语气比since弱；位置较为灵活，常放于主句之前Since everyone is here, let’s start our meeting. 既然大家都到了，那么让我们开始开会吧※for 表附加或推断的理由；为并列连词；只能放在句子后部The days are short, for it is now December. 白天短了，因为现在已是十二月份 ※because 接句子 Because he was tired, he couldn’t walk there.因为他很累，所以他不能走到那儿去※because of接名词或动名词 He was tired, so he couldn’t walk there. 他很累，所以他无法走到那儿去二、专题过关检测题1： He must be ill, ____________he looks so pale.A. since B. because C. as D. for答案：D 解析：后半句补充说明判断的理由，且位置在后半分句，选for；since和as多置于主句前，且表示已知的明显的原因。
because则表明直接原因，直接回答why的提问检测题2： Because I got up very late this morning，________ I was late for class.A. but B．/ C. so D. or答案：B解析：考查连词前半句“因为我今天早晨起床晚了”，后半句“我上课迟到了”之间存在因果关系，故选B但because与so不可以同时使用，故为什么都不填三、学法提炼1、专题特点：原因状语从句顾名思义，从句表达的是意思的是原因，引导从句的引导词都是表示“因为”的，because（因为） since=now that（既然）, as（由于）2、解题方法首先，要翻译句意，看从句是否能够要表达“因为”，确定之后选择because（因为） since=now that（既然）, as（由于）其中之一即可3、注意事项 在汉语中，我们经常说“因为……所以……”，但在英语中because和so只能用一个。
所以because与so不能同时出现在一个句子中（because是从属连词；so为并列连词）一、专题精讲 结果状语从句so …that / such…that，so that 如此1）引导词 so+形容词/副词+that2）辨析 such+名词/名词短语+thatIt’s so cold outside that nobody will go out to play.It’s such nice weather that all of us want to go to the park. ※ So +形容词或副词 + that※ So + 形容词 + a/an + 单数名词 + that※ So + many/few + 复数可数名词 + that※ So + much/little + 不可数名词 + that※ ※ ※ ※ ※ ※ ※ ※ ※ ※ ※ ※ ※ ※ ※ ※ ※※ Such + a/an + (形容词) + 单数名词 + that※ Such + (形容词) + 复数名词 + that※ Such + (形容词) + 不可数名词 + that3）句型 3）经典句型转换：He is too young to go to school. 他太年幼了以至于不能上学。
He isn't old enough to go to school. 他的年纪还没有大到足以上学 He is so young that he can't go to school. 他是如此的年幼，以至于他不能上学※so…that与too…to的转换： She is so young that she can’t go to school. ＝She is too young to go to sc She is so young that she can’t go to school. ＝She is too young to go to school.※so…that与enough to的转换：Xiao Lin is so old that he can go to school. ＝Xiao Lin is old enough to go to schoolThe man is so old that he can’t go to work. ＝The man isn’t young enough to go to work. (当that从句为否定句时，注意转化后要用形容词副词的反义词)二、专题过关检测题1： The workers work ____hard _____they don’t have a day off even on the weekend. A. too, that B. such, that C. so, that D. as, that 答案：C 解析：第一空后为副词hard，所以应用so…that…结构表示“如此，以至于”。
检测题2：There is____ much bird food _____it can last for two months. A. such, that B. so, that C. such a, that D. so, to答案：B 解析：第一空后是名词短语，本该用such…that结构，但名词food前有much修饰，当名词前有many，much，few，little等修饰时，只能用so，故选B.检测题3：It was _________ music that I lost myself in it.A. such a beautiful B. so beautiful a C. so beautiful D. such beautiful 答案：D解析：设空后为名词短语beautiful music，所以应选用such…that…结构又因为music是不可数名词，不会存在A.B.选项中such与so句型互换的可能性检测题4：This is _____difficult problem that few students can work it out.A. so B. so a C. such D. such a答案：D解析：因problem为单数可数名词，such和so两种句型可互换。
但如果选B,冠词a需放到problem前，因为so后面要紧跟形容词副词，而不是冠词检测题5：Curing sick people is______ important _______doctors must be careful.A. too, to B. so, that C. enough, to D. such, that答案：B解析：因为第二空后为一个句子，而不是动词原形，所以排除A.C;又根据第一空为后为形容词选so三、学法提炼1、专题特点：结果状语从句主从句的逻辑关系是因果，从句表达的结果，一定不能和原因状语从句弄混，他们的逻辑关系是不同的！2、解题方法 当名词为单数可数名词时，so…that…与such…that…句型可互换She is such a lovely girl that we love her very much. 当用such时，后紧跟冠词；=She is so lovely a girl that we love her very much. 当用so时，后紧跟形容词 如果名词前有many, much, little, few等词修饰时，只能用so, 不用such. Soon there were so many deer that they ate up all the wild roses.He has so little time that he can’t go to the cinema with you.※enough to与too…to的转化：转换后的too…to结构中的形容词（副词）要用其相应的反义词。
He is not old enough to do the work. ＝He is too young to do the work.1.由于too…to “太以至于不能本身含有否定含义，so…that与enough to要与其转化，从句或句子必须是否定式； 2. too…to和enough to后跟动词原形；so…that后跟从句； 3.转化时若前后主语不一致，可转化为too/enough…for sb to结构The box is so heavy that he can’The box is so heavy that he can’t carry it. ＝The box is too heavy for him to carryThe problem is too difficult to work out. ＝ The problem isn’t 。