Unit4Astronomy：thescienceofthestarsGrammar:Nounclausesasthesubject高一必修3lifeis beginningWe were bornWe are growing upmotherFor all these, we should give thanks to our mothersbecause they give us our lives!I think _I wonder_I feel _Im sure _ uWhat my mother likes is_uWhat my mother doesnt like is_uWhat makes my mother happy is_uWhat my mother needs is_u .Q:Do you think you know your mother very well?Q:Do you think your mother knows you very well?uIt is obvious that my mother treats me as _A.a little child B. a friend C. an adult D. uThat my mother always treats me as makes me _What is the reason for the generation gap?The reason is that_ _my mother is too busy to talk with me.she cant understand me. my mother doesnt like to accept new things.I cant understand my mother either. (more reasons) The reason is thatWhat is the reason for the generation gap?Try to say something to your mothers.What I most want to say is thatWhat I want to apologize is thatIt is necessary that(should) Whetheris not important.It is a pity thatTry to start it with:1.Complete the sentence on your card.2. Discuss with your partners in your group and then choose one sentence that you all think is the best.成分成分主语主语宾语宾语状语状语不作成分不作成分连接词连接词whatwhowhichwhatwhomwhichwhen wherehow whythat(陈述句）陈述句）whether（疑问句）（疑问句）the usual construction: It is + adj./ n. + subject-clauseHer job is teaching.What 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？什么区别？句1和句2中isteaching是系表结构，所以句1的主语是Herjob,句2的主语是Whatshedoes。句2的主语是一个句子。 That he will refuse this piece of advice is impossible.It is impossible 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？思考：以下句子的主语位置的变化？句1的主语是从句Thathewillrefusethispieceofadvice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It is a great pitythat he should be so conceited. .It 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？思考：什么是形式主语，什么是真正主语？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。思考：下面的句子属于主语从句的句型结构思考：下面的句子属于主语从句的句型结构1 1吗？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, common knowledge .常用的形容词有：necessary, obvious, wonderful, unusual, surprising, ertain, worthwhile.（记忆技巧：（记忆技巧：p,wonder,good,sp,wonder,good,s和和missknow.n,o,won,umissknow.n,o,won,u是是e,worth.e,worth.）思考：下面的句子属于主语从句的句型结构思考：下面的句子属于主语从句的句型结构2 2吗？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2中不及物动词为seems。It 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思考：下面的句子属于主语从句的句型结构3 3吗？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中过去分词为reported。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It Itbe+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。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，用根据图片和给出的单词，用it it作形式主语，主语从句当真正主作形式主语，主语从句当真正主语的语法进行造句。语的语法进行造句。report , get the highest points, match It is reported that Yao Ming got the highest points in the match.It is reported that . 教学过程达标测评 That is obvious that he didnt pass the exam.1. 1.单句改错单句改错It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 wear rain shoes on rainy days. _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4.4.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. ItIn my opinion, it is very important _ (我学好我学好语法法) 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 learn grammar wellItwhether5. 5.把下面的文章补充完整。把下面的文章补充完整。astronomyatomfundamentalpuzzleexistpreventfromas a result give birth to Complete the following passage with the words and phrases below in the correct form.(p28)天文学天文学原子原子基础的基础的谜谜, 迷惑迷惑存在存在,生存生存阻止阻止,制止制止结果结果产生产生,分娩分娩Is the moon a planet ? This question is _if students are to show that they understand the nature of _. Some scientists think that the earth _ the moon because the moon circles our planet. Others believe that the moon _ before the earth was formed. They think that earlier in time it travelled through space as a small planet which was caught by the earths gravity. _, it goes around our planet. The evidence for this theory is that the _ that make up the rocks on the moon seem to be different from those on earth. What is clear is that the moon is smaller than the earth and this _ it _ escaping from the earth. Although its origin may still be a _, the moon can never be anything more than a satellite of the earth.fundamentalastronomygave birth to existedAs a resultatomspreventsfrompuzzleIs the moon a planet ? This question is _if students are to show that they understand the nature of _. Some scientists think that the earth _ the moon because the moon circles our planet. Others believe that the moon _ before the earth was formed. They think that earlier in time it travelled through space as a small planet which was caught by the earths gravity. _, it goes around our planet. The evidence for this theory is that the _ that make up the rocks on the moon seem to be different from those on earth. What is clear is that the moon is smaller than the earth and this _ it _ escaping from the earth. Although its origin may still be a _, the moon can never be anything more than a satellite of the earth.fundamentalastronomygave birth to existedAs a resultatomspreventsfrompuzzleGoodbye!