人教版高中英语必修3：难点-理解（主语从句）的用法课件.ppt

1、理解【主语从句】的用法制作：华渔学研中心学研二部英语处时间：2018.1.30人教版必修三 Unit4教学过程PROCESSPROCESSHer job is teachingWhat she does is teaching.在句中充当主语的从句叫做主语从句。思考：划横线部分在句中充当什么成分？主语从句和普通主语有什么区别？句1和句2中is teaching是系表结构，所以句1的主语是Her job,句2的主语是What she does。句2的主语是一个句子。3 That he will refuse this piece of advice is impossible.It is imp

2、ossible that he will refuse this piece of advice.It作形式主语思考：以下句子的主语位置的变化？句1的主语是从句That he will refuse this piece of advice是正常的语序，放在句首。但是这样的主语会给人一种头重脚轻的感觉，所以为了保持句子的平衡，常用it作形式主语置于句首，而将真正的主语放在句尾，如句2。主语从句的句型结构：1.It+be+1.It+be+表语表语+主语从句（表语：名词，主语从句（表语：名词，形容词）形容词）2.It+2.It+不及物动词不及物动词+主语从句主语从句 3.It+3.It+过去分词过

3、去分词/动词的被动语态动词的被动语态+主语从句主语从句教学过程4It is a great pitythat he should be so conceitedIt seems that Alice is not coming to the party at all.It is said that Mr.Green has arrived in Beijing.形式主语真正主语我是傀儡我是大王我说了算思考：什么是形式主语，什么是真正主语？教学过程形式主语只是形式上帮助当主语，并没有真正的意思；后面的主语从句才是真正的主语，翻译的时候应该把主语从句的意思放在it的位置。5思考：下面的句子属于主语

4、从句的句型结构1吗？（句型结构（句型结构1 1：It+be+It+be+表语表语+主语从句（表语：名词，主语从句（表语：名词，形容词）形容词）It is impossible that he will refuse this piece of advice.It is a great pity/shame/that he should be so conceited句1中表语为名词a pity/shame。句2中表语为形容词impossible。常用的名词有：a pity,a wonder,a good thing,a surprise,an honor,a miracle,a secret,

5、common knowledge.常用的形容词有：necessary,obvious,wonderful,unusual,surprising,ertain,worthwhile.教学过程6思考：下面的句子属于主语从句的句型结构2吗？（句型结构句型结构2 2：It+It+不及物动词不及物动词+主语从句）主语从句）It happens that they were absent.It seems that Alice is not coming to the party at all.常用的不及物动词有：seem,happen,matter,turn out.句1中不及物动词为happens。句

6、2中不及物动词为seems。教学过程7It is said that Mr.Green has arrived in Beijing.It is reported that China has sent another manmade earth satellite into orbit.思考：下面的句子属于主语从句的句型结构3吗？（句型结构（句型结构3 3：It+It+be+be+过去分词过去分词/动词的被动语态动词的被动语态+主语从句）主语从句）常用的过去分词有：known,expected,believed,thought,suggested,found.句1中过去分词为said。句2中

7、过去分词为reported。教学过程8总结归纳主语从句的句型结构主语从句的句型结构形式主语真正主语ItItbe+be+表语（表语：名词，表语（表语：名词，形容词）形容词）主语主语从句从句不及物动词不及物动词be+be+过去分词过去分词/动词的被动语态动词的被动语态记忆技巧：“it”形“从”真，成句型，主语从句构成形。请用表格演示主语从句的句型结构。实际操练根据图片和给出的单词，用it作形式主语，主语从句当真正主语的语法进行造句。report,get the highest points,match It is reported that Yao Ming got the highest poi

8、nts in the match.It is reported that.10Game TimePick outPick out one number and finish one number and finish the task in it.the task in it.达标测评考考你11教学过程达标测评TESTTEST考考你 That is obvious that he didnt pass the exam.1.1.单句改错单句改错It教学过程达标测评TESTTEST考考你众所周知，众所周知，雨天要穿雨鞋。雨天要穿雨鞋。It is known that2.2.完成句子完成句子_we

9、 wear rain shoes on rainy days.回到第回到第9 9页页13_Yao Ming got the highest points in the match.据报道，据报道，姚明在这场比赛中得了最高分。姚明在这场比赛中得了最高分。It is reported that 3.3.完成句子完成句子达标测评考考你回到第回到第9 9页页TESTTEST144.4.单项选择单项选择 _ is a fact that English is accepted as an international language.A.There B.This C.That D.It考考你达标测评回到

10、第回到第9 9页页TESTTESTIn my opinion,it is very important _(我学好语法我学好语法)because it can help me with my writing and my sentence structure._ is known to all that grammar is really a bridge to success.Believe it or not,it doesnt matter _ we can recite all those grammar rules.What we need to do is try to understand and use the language.I should learngrammar wellItwhether5.5.把下面的文章补充完整。把下面的文章补充完整。考考你达标测评回到第回到第9 9页页TESTTEST谢谢聆听谢谢聆听16