1、Unit4 Astronomy:the science of the starsStep 1 Lead-in(课堂导入课堂导入)(Robbing game)float名词性从句名词性从句Noun clause名词性从句名词性从句Noun clauseNoun clauseStep 2 Checking（预习检测）（预习检测）observe these sentences and judge what clauses are they1.No one knows how the earth began.2.Lily promised that she would come.3.Im thinki
2、ng of whether we should go fishing.4.This is because you didnt finish the job.5.This place is where I put my bag yesterday.6.What is done by night appears by day.主语从句主语从句表语从句表语从句宾语从句宾语从句表语从句表语从句宾语从句宾语从句宾语从句宾语从句Step 3 Exploring question（问题探究）（问题探究）1.What part does the underlined part serve as in each
3、 sentence?1)You are a student.2)The little girl is so cute.3)Smoking is bad for you.4)To find your way can be a problem.5)How the book will sell depend on its author.归纳：划线部分在句子中做归纳：划线部分在句子中做_成分成分.句句子的主语可以子的主语可以是是_主语主语 代词，名词，动词代词，名词，动词ing形式，形式，不定式，主语从句不定式，主语从句2.Try to summarize the rules.1)That the o
4、ld building was rebuilt is right.That he is the best student in the class is obvious.It is obvious that he is the best student in the class.2)Whether he will come here is not clear.It is not clear whether/if she is coming here tonight.3)Who will do this job doesnt matter.What he said is not yet know
5、n.Whatever he said is not true.4)Where the students will be sent to work is not decided.Why he was late for school is clear now.When we will begin the meeting is under discussion.归纳：归纳：1.划线句子是划线句子是_从句。从句。2.位置：位置：_或或_3.语序：语序：_4.为了使句子结构平衡为了使句子结构平衡,避免避免“头重脚头重脚轻轻”,常常把把主从移至句末，主从移至句末，用用_代替代替主从放句首。主从放句首。5.
6、主语从句放句首，主句谓语动词用主语从句放句首，主句谓语动词用_形式。形式。单数单数主语主语句首句首/句尾句尾be/vt前前陈述句语序陈述句语序it连接词：连接词：1).连词连词that 引导主语从句只起引导作用引导主语从句只起引导作用,本身无实际意义本身无实际意义,在主语从句中不充当任在主语从句中不充当任何成分何成分,但不能省略。但不能省略。2).表示表示“是否是否”用连词用连词_/_放在句首的主从，用放在句首的主从，用_ 放在句末主语从句，用放在句末主语从句，用_3）连接代词）连接代词:_等。等。4)连接副词连接副词:_等等whetherifwhetherWhether/if What/wh
7、o/which/whateverWhere/why/when/how1).连词连词that 引导主语从句只起引导主语从句只起引导作用引导作用,本身本身无实际意义无实际意义,在主语从句中在主语从句中不充当任不充当任何成分何成分,但但不能省略不能省略。Step 4 Cooperative learning（合作交流）（合作交流）Complete the sentences using what,whether,where,when,who,why,how or that.1.(_ is needed for success)is your hard work.2.(_ they will arri
8、ve)has been told to the teacher.3.It is not clear(_we will go shopping tomorrow.)4.(_ can join in the sport meet)is decided by the teacher.5.(_ it will rain or not)is not clear.6.(_ the earth is becoming warm)is a good topic for research.7.(_ the sun is rises in the east)is known to us all.8.Step 5
9、Presentations.（展示解疑）（展示解疑）1.(_ is needed for success)is your hard work.2.(_ they will arrive)has been told to the teacher.3.It is not clear(_we will go shopping tomorrow.)4.(_ can join in the sport meet)is decided by the teacher.5.(_ it will rain or not)is not clear.WhatHowWhereWhoWhetherWhenwhether
10、6.(_ the earth is becoming warm)is a good topic for research.7.(_the sun rises in the east)is known to us all.8.(_ you said yesterday)is right.9.It is clear(_ you didnt go to see the film.)10.(_inspired Chinese most in 2008)was(_the Chinese team won the first place in the total number of medals in t
11、he Beijing Olympics.)ThatWhy 主语从句作主语时，谓语动词一般主语从句作主语时，谓语动词一般用单数形式。用单数形式。Conclusion:WhatthatWhat thatStep 6 Feedback（反馈检测）（反馈检测）1.What he is a good student is true 2.You have made a mistake is a fact.3.If the policemen will come is not certain.4.That he said is true.5.What he said are right.6.That he needs are more books.7.What he needs are more time.That That WhetherWhat isWhat isStep 7 Assignment(作业作业)1.Recite words and expressions2.Try to translate the sentences on the learning paper.
