book6Unit4Globalwarming语法公开课教程

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,*,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,*,*,book6Unit4Globalwarming语法公开课教程,Grammar：,“It is/was.that.,强调句型,2021年3月2日,口诀：,代词,it,本意它,既可指这又指那,;,时间天气均可指,谈到距离也用它,;,假主假宾均可做,强调句型跟,that,。,I,.,代词,it,a.,用作人称代词,代替前文提到的事物。,My watch is missing.I cant find(,it,)anywhere.,Her father has gone abroad.Have you heard about(,it,)?,b.,代替指示代词,this,that,。,Whats this?(,It,s)a computer.,Whose pen is that?,It,s mine.,c.,表示时间、天气、距离、季节等。,It,s time for lunch.,It,s getting warmer and warmer,It,s forty years since my hometown was,liberated.,It,s summer now.,How far is,it,from here to the police station.,II.引导词：,a.作形式主语,代替由不定式,动名词或从句表示的真正主语。其根本句型为：,It(形式主语)+adj.+to+v.,It(形式主语)+adj.+that(subject(主语)+v.),It,is very important to help each other,It,is no use/useless going there again,It,s not decided yet when they will leave for Shanghai,b.,作形式宾语,主语谓语,it(,形式宾语,),宾语补足语,to do sth.(doing sth.,或,that,从句,).,Marx found,it,important to study the situation in Russia.,She thought,it,no use to write to him again.,They want to make,it,clear to the public that they do an important and necessary job.,c.用在强调句型中,为了强调句子的某一成分(通常是主语、宾语或状语),常用构造:,It is/was 被强调局部that(who).,一、强调句型的一般形式,在英语中，我们常用“It is/was.who/that.句型来强,调句子的某一成分(一般是句子的主语、宾语或状语，,但不能是句子的谓语)。在这个句型中，it没有词汇意义，,只是引出被强调的成分。如果被强调的成分是表示人的,词，用who或that来连接都可以。如果是其他成分，那么,一律用that来连接。,It,was,I,who(that)met Tom in the street yesterday.,It,was,Tom,that I met in the street yesterday.,It,was,in the street,that I met Tom yesterday.,It,was,yesterday,that I met Tom in the street.,主语,宾语,时间状语,地点状语,I,met,Tom,in the street,yesterday,典型例题分析：,1)It was last night _ I saw the film Star Wars,A,who B,when,C,that D,which,c,答案C 强调句的构造是：It+be+强调局部+that(who)+主谓句。强调句的连词只有两个，that和who。当强调的局部是人，且为句子的主语时，才用who，其余用that。,2)It is ten years _ Miss Green returned to Canada,Athat Bwhen,Csince Das,答案 C考点是连词用法。此题易误选为A 其实本句不是强调句。,c,假设是去掉It bethat还应是一个完整的句子。而本句去掉It isthat,只剩下ten years Miss Green returned to Canada 不成句。因此本句不是强调句。It is+时间+since.，其中 is=has been.,二、强调句型的疑问式,1一般疑问式：Is/Wasit被强调局部that/who,其他成分？,Was it during the Second World War that he died?,他是二战期间死亡的吗？,Was it last year that you got the degree?,你是在去年获得学位的吗？,2,特殊疑问式：特殊疑问词,is/was,it,that,其他成分？,Where was it that you met Tom yesterday?,昨天你是在哪儿遇见汤姆的？,Why is it that you want to change your idea?,你为什么想改变你的主意呢？,Was it on a lonely island_he was saved one month after the boat went down?,AwhereBthat,Cwhich Dwhat,解析：选 。考察强调句型。强调句的构造是：“It is/was被强调的局部that/who句子的其他局部，表示“正是或“就是。强调句型的一般疑问句构造：Is/Was it.that/who.?,B,典型例题分析,B,三、not.until型强调句式,1句型为：It is/was not until被强调局部that其他局部,普通句：He didnt go to bed until/till his wife came back.,直到妻子回来他才睡觉。,强调句：It was not until his wife came back that he went to bed.,直到妻子回来他才睡觉。,2注意强调句型中只能用until，不能用till。但如果不是强调,句型，till，until可通用。且强调句型It is/was not until.,已经是否认句了，所以that后面的句子的谓语要用肯定形式。,I hadnt realized she wasnt English until/till she spoke.,It was not until she spoke that I had realized she wasnt English.,直到她开口说话我才知道她不是英国人。,It was_he came back from Africa that year_he met the girl he would like to marry.,Awhen;then Bnot;until,Cnot until;that Donly;when,解析：选 。考察强调句型。句意：他直到那年从非洲回来之后才遇到了他想与之结婚的女孩。此句是“not until.的强调句型。,C,典型例题分析：,C,四、使用强调句型的几个本卷须知,1假设被强调成分是主语，who/that之后的谓语动词应该在人称和数上与被强调的主语保持一致。,It is he who/that often helps me with my English.,是他经常帮我学英语。,It is trees that we plant on the hillside every year.,我们每年都在山坡上种的是树。,2,即使被强调成分是句中的时间状语、地点状语、原因状语等，也不能用,when,where,because,等，要用,that,。,It was in front of the bank that the old lady was robbed.,老太太是在银行前面被抢劫的。,It was because of the heavy rain that he came late.,由于下大雨他来晚了。,3假设被强调成分是作主语的代词，用主格；假设是作宾语的代词，那么用宾格。,It was he that helped me yesterday.,昨天帮我的人是他。,It was me that he helped yesterday.,他昨天帮的人是我。,4强调句中只用两种时态，即一般现在时和一般过去时。,原句谓语动词是一般过去时、过去完成时和过去进展时，,用It was.that/who.，其余的时态用It is.that/who.,It is you who/that are to blame.,是你该受到指责。,It was chairman of the committee that we elected her.,我们选她当委员会主席。,五、强调句型与其他相似句型的辨析,强调句型最容易与定语从句、主语从句和状语从句等,混淆，区分它们的关键在于：如果把句子中的It is/was,和that/who去掉，剩下的局部还是一个完整的句子，并,且句子意思依然完整，那么此句为强调句型；否那么，应,仔细分析句子，判断该句是何种从句。,It was at the school gate that I met an old friend of mine.,我是在学校大门口遇见一位老朋友的。,(),It is always the mouth which talks too much that arouses troubles.,言多必失。,(,),It was such a hot day that even the crops withered.,天气极度炎热，连庄稼都枯萎了。,(,),强调句,定语从句,结果状语从句,1.It was this village _ I was brought.,A.where B.that,C.on which D.which,练习,2.It was in this village _ I was brought up.,A.where B.that,C.on which D.which,I,3.-Was it under the tree _ you were talking to a friend?,-Sure.But when I got back there,the bike was gone.,A.that B.where,C.which D.while,II.每空填一词,使该句与所给句子的意思一样。,1.We depend on energy to do many things.,_ _ energy _ we depend on to do many things.,2.He didnt go to school because he was ill.,_ _ because he was ill _ he didnt go to school.,It is,that,It was,that,3.My father,didnt,return,until,11 oclock last night.,_ _ _ _ 11 oclock _ my father returned last night.,4.,David,bought a walkman from a store yesterday.,_ _ David _ bought a walkman from a store yest