八年级英语下册-Unit-3-An-Amazing-Plant-Lesson-3-and-Lesson-4知识精讲-教科版VIP专享VIP免费

Unit3AnAmazingPlantLesson3重点解析：表示原因的状语从句；同位语从句1.原因状语从句：概念：表示主句动作发生的原因或理由的状语从句叫做原因状语从句。常用的关联词有for(因为),since(既然),as(因为),because(因为),nowthat(既然)等。例：Sinceyoudon’ttrusthim,youshouldnotemployhim.既然你不信任他，就不应该雇用他。【用法辨析】because,for,as,since,nowthatbecause用于说明主句谓语动作发生的直接原因，语气最强；for用于说明主句谓语动作发生的原因是来自于从句主语的个人推断或补充说明；as用于委婉地解释主句谓语动作发生的原因；since和nowthat用于说明主句谓语动作发生源于一个既存的事实，（如上例：“youdon’ttrusthim”已是一个既存的事实，这一原因决定了主句谓语动作发生的理由）。例：Henrydidn’tgotoschoolbecauseitwasraining.亨利没有去上学，因为在下雨。例：Itmustberainingnow,forIcanhearthesoundofwaterflowingonthewindow.肯定下雨了，因为我听见窗台在哗哗趟水。2.同位语从句概念：在复合句中充当同位语的简单句叫同位语从句。同位语从句一般放在fact,fear,hope,idea,information,news,problem,question,truth等名词后面，说明该名词的具体内容。例：Youmustlivewiththefactthatyouarenolongerasstrongasyouwere.你必须承认，你已经不像过去那么健壮了。例：Iwassuddenlystruckby(with)thefearthattheywoulddrown.我突然被一种恐惧感笼罩住，害怕他们会淹死。例：Theideathatbabiesshouldbefatwasexplodedyearsago.婴儿应该胖的观点多年前就被推翻了。例：Answermyquestionwhetheryouagreetomydecision.回答我的问题，你是否同意我的决定。Lesson4重点解析：Lookatthedialogue.Puttheexpressionsinthecorrectplaces.A:Susan,whatareyoudrinking?B:Somegingertea.A:Isgingergoodforyou?B:Yes,itis.Ithasmanybenefits.A:Whataresomebenefitsofginger?B:Ithelpsyouthinkmoreclearly.Doyoueatanyfoodsthataregoodforyourhealth?用心爱心专心1A:Sure.Ieatalotofvegetables.B:Goodforyou!【典型例题】1.Amydecidedoutmoreaboutgarlic.A.findingB.tofindC.finds2.Garlichasbeenanimportantfoodforyears.A.thousandofB.twothousandsC.thousandsof3.Theremanybenefitstothesefoods.A.eatB.eatingC.beeaten4.Anappleadaythedoctoraway.A.keepB.keepingC.keeps5.Whichwordstressisdifferentfromtheothers?A.decideB.benefitC.importance【参考答案】1.B2.C3.B4.C5.B用心爱心专心2