as,since,because,becauseof的运用与区别

单击此处编辑母版标题样式,单击此处编辑母版文本样式,第二级,第三级,第四级,第五级,2016-06-01,#,单击此处编辑母版标题样式,单击此处编辑母版文本样式,第二级,第三级,第四级,第五级,2016-06-01,#,Im sure something landed in the forest near the hills as I heard a loud noise last night.,Since no one else saw these aliens,I refuse to believe you.,Read aloud.,as,since(,既然,),可用来,引导,_,状语从句,原因,原,因,状语从句最常用的引导词为,_,because,原因,状语从句通常由,because,since,as,引导,。,because,:,表示直接理由，强调别人未知的事实，既可放在主句之前，也可放主句之后。,as,和,since,语气较弱，一般用来表示明显的原因。由,as,和,since,引导的原因状语从居多放在句首。,because,，,since,和,as,引导原因状语从句时，不能和,_,连用,。,so,Im,sure something landed in the forest near the hills,as,I heard a loud noise last night.,Since,no one else saw these aliens,I refuse to believe you,.,原因状语从句常放在主句,后,面,也可放,在主句,的,前,面,用逗号隔开。,The spaceship was damaged _ a crash.,A.because B.as C.since D.because of,because of,后面接名词,名词短语,人称代词的宾格,;,because,后接句子,.,1.Tina woke up at midnight _ a loud noise.,A.because B.because of C.as D.since,2.I will not tell you the rules_ I have told you before.,A.because B.because of C.until D.while,用,because,或,because of,填空,1.They went to the forest _,their curiosity.,2.Tina woke up at midnight _,a loud noise.,3.Tim didnt go to school yesterday _ he was ill.,4.Im unhappy _ your marks in the exam.,because of,because of,because,because of,根据所给中文补全句子,1.Li Ming didnt go out for a walk because of _.(,天下大雨,),2.Li Ming didnt go out for a walk because_.(,天下大雨,),3.Li Ming wont go to the meeting because_.(,他生病了,),4.Li Ming wont go to the meeting because of _.(,他生病了,),the heavy rain,it rained heavily,he,is,ill,his illness,Practise more!,Write sentences about the story on page 99 using,because of,.,Tina was surprised because of the yellow light in the sky.,The aliens landed on this planet because of an accident.,The children ran away from the forest because of the aliens.,Their dad was not sure about the childrens story because of the writing on the piece of paper.,Page 105,综合练习册,Page 113,B.,2 because of her illness,3 because of last nights storm,4 because of a car accident,5 because of its high price,6 because of his broken leg,C.,1,as/since/because,the batteries were used up,2 because of a bad cold,3 because of her carelessness,4,as/since/because,she has to take piano lessons,5,as/since/because,he has been there before,6,as/since/because,I knew no one there,