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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,*,Grammar,Unit 4 Astronomy the science of the stars,1.,了解并掌握主语从句的相关概念,2.,准确使用主语从句的连接词并能在写作中灵活运用主语从句。,3.,重点：,It,做形式主语的各种句式及虚拟语气的使用。,4.,难点：引导主语从句的连接词的使用。,目标展示,1._ it was to become was uncertain.,2._ is even more important is _ as the earth cooled down,water began to appear on its surface.,3._ many scientists believe is _ the continued presence of water allowed the earth to dissolve harmful gases and acids into the oceans and seas.,4._ they suddenly disappeared still remains a mystery.,5._ life will continue on the earth for millions of years to come will depend on _this problem can be solved.,6.It was not immediately obvious_water was to be fundamental to the development of life.,7.It was not clear _ the shape would last or not.,what,what,that,what,that,why,whether,whether,that,whether,1),为什么他们突然消失了,至今还是个谜。,_still remains a mystery.,Why they suddenly disappeared,2),水对于生命的发展会起关键作用,这一点在当时并不明显。,_was not immediately obvious_,It,that water was to be fundamental to,the development of life.,1.,Why they suddenly disappeared still remains a mystery.,该句中主语从句是,_,_,，引导词为,_,。,Why they suddenly,disappeared,why,【,例句呈现,】,观察下列例句，指出其中所包含的主语从句及引导词,:,2.,It,was not immediately obvious,that water was to be fundamental to the development of life.,.,该句中主语从句是,_,_,，引导词为,_,。,that water was to be,.,that,fundamental to the development of life,【,观察总结,】,通过分析上面例句，同学们可能会发现上面第,1,句中的主语从句是直接在,_,，而第,2,句中的主语从句似乎比较隐蔽。其实，这也是主语从句的一种呈现方式，即：当一个句子主语过长时，可以用,_,作形式主语，而把真正的主语或主语从句后移至句子,_,，以保持句子的平衡。注意观察下列例句中的划线部分：,句首,it,末尾,1.It is not clear,how the accident,happened.,2.It is a pity,that you should have,made such a careless mistake.,3.It seems that,we all like the teacher.,4.It is reported,that more than thirty,deaths were caused in the accident.,这样就构成了下面一些常用句型,:,1)It is+adj./n.+,从句,It is a pity/shame that.,遗憾的是,It is possible that.,很可能,It is unlikely that.,不可能,2)It+,不及物动词,+,从句,It seems/appears that.,似乎,It happened that.,碰巧,3)It+be+,过去分词,+,从句,It is said that.,据说,It is known to all that.,众所周知,It is reported that.,据报道,It is believed that.,据信,;,人们相信,It is suggested that.,有人建议,Can you rewrite the following sentences using“it”.,1.That the earth turns around the sun,is known to all.,2.,That price will go up,is certain.,3.,That they are badly in need of help,is quite clear.,It is known to all,that the earth turns around the sun.,It is certain,that price will go up,.,It is quite clear,that they are badly in,need of help.,用适当的单词填空，使下列主语从句意思完整。,1._ he finished writing the composition in such a short time surprised us all.,2._ we will go for an outing tomorrow remains unknown.,3.It is a pity _ we wont be able to go to the south to spend our summer holidays.,That,Whether/Where,that,4._ she is coming or not doesnt,matter too much.,5._ he came from still puzzles all,of us.,6.It happened _ I saw him yesterday.,7.It does not make any difference to me _ you do.,Whether,Where,that,what,8._ was responsible for the accident,is not yet clear.,9._ they will have,the sports meet is still a question.,10.It doesnt matter _ she looks,like.,Who,When/Where/Whether,what,一找 从句,;,二查 缺少什么成分,;,三选 意思适合的连接词,名词性从句中缺什么成分就补什么,缺主，宾,表，定语用连接代词（,what,，,who,，,which,，,whose,等）；不缺成分，意思完整用,that,；缺状语用连接连接副词引导（,when,，,why,，,where,，,how,）。,学法指导,名词性从句中引导词的选择,1.They may also take one or more examinations that test,17,well prepared they are for the university.,(2011,年揭阳二模,),2.Official figures show _23_400 middle and primary schools in the UK have Chinese language classes.,（,2011,茂名市高考一模）,how,that,名词性从句在语法填空中的实际运用,:,写作中的名词性从句,一篇作文，在适当的地方恰当地放置一两个,从句,，不仅会让作文更耐读，而且作文分值会有所提高。,高考英语作文评分标准,第五档,(,很好,),；,(21-25,分,),1.,完全完成了试题规定的任务。,2.,覆盖所有内容要点。,3.,应用了较多的语法结构和词汇,。,4.,语法结构或词汇方面有些许错误，但为尽力使用较复杂结构或较高级词汇所致；具备较强的语言运用能力。,5.,有效地使用了语句间的连接成分，使全文结构紧凑。,6.,完全达到了预期的写作目的。,名词性从句在写作中的实际运用,:,写作中,得高分的方法之一,:,改造低级句型,让你的英语靓起来,.,What he gave me,was,not only,a Christmas present,but also,a heart full of love.,主语从句,原句,:,He gave me,something,.,And,it,was a Christmas present and a heart full of love.,2,个简单句,1.,在我看来，,这些父母所做的,已经对他们的发展造成了坏的影响。,(2010,读写任务）,In my opinion,_,has a bad influence on their childrens development.,Subject Clause,what these parents have done,写作常用句型,:,It is said that.,据说,It is known to all that.,众所周知,It is reported that.,据报道,It is believed that.,据信,;,人们相信,It is suggested/advised that.,有人建议,_and its of great help to our eye health to participate in more outdoor activities,2.,建议,:,我们学生不要过度用眼,；多参加户外活动。（,09,基础写作）,Subject Clause,It is suggested that we students not overuse our eyes,Whether Native Americans arrived in Californian 15,000 years ago or 14,000 years ago is not important.Exactly when the first people arrived in,1.,_ we now know as California,no one really knows.The fact,2.,_ they arrived a long time before Europeans is what matters.I believe,3.,_the Native Americans were treated badly,4.,_ the first Europeans came.However,it is likely,5.,_ Native Americans were living in California at least 15,000 years ago.,what,that,that,when,that,Scientists believe,6,._these settles crossed the
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