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九年级英语 Book 15 Unit 2 (II)知识精讲 北师大版
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初三英语Book15Unit2(II)北师大版【本讲教育信息】一.教学内容：Book15Unit2(II)能够正确使用动词不定式二.教学重点和难点：1.动词不定式的使用2.如何表达同意和反对别人的观点。3.重点词汇和词组。三.具体内容：（一）动词不定式：结构：to+动词原形功能：动词不定式在句子中可以充当以下六种句子成份。1.作主语TolearnEnglishwellisverydifficult.不定式做主语，往往由it作形式主语，不定式移到句子的后面。ItisdifficulttolearnEnglishwell.2.作表语Thedutiesofapostmanaretodeliverlettersandnewspapers.3.作宾语Ihopetobecomeateacheraftergraduation.跟不定式作宾语的常见动词有：agree,want,refuse,offer,promise,choose,decide,determine,fail,ask,hope,expect,wish,learn,afford,intend,demand,manager,preparebegin,start,forget,remember,like,love,try,need,…另外feel,find,think,consider等动词后接不定式做宾语，补语是形容词时，常用it做形式宾语，把不定式后移。IfinditdifficulttolearnEnglish.4.作宾语补足语（补充说明宾语）Iwishhimtowinthegame.跟不定式做宾补的常见动词有：advise,wish,prefer,order,teach,get,expect,like,want,ask,encourage,invite,require,tell,help,allow,force还有一些词后面跟不带to的不定式做宾补：see,hear,notice,feel,watch,make,let,have,listento…Hesawthemplayontheplayground.5.作定语Therearealotofbookstoread.不定式与其修饰的词之间一般都有动宾关系，如果不定式是个不及物动词，其后应有介词。Heisanicepersontoworkwith.Therearealotofbookstoread.6.作状语1）表示目的Topasstheexam,Imustdomybesttostudy.不定式作目的状语时，否定式必须用inordernottodo，soasnottodoLet’shurryinordernottobelatefortheclass.2）表示结果Shelivedtoseehergrandsongotouniversity.3）表示原因Iamgladtoseeyou.Shewasveryhappytohearthegoodnews.7.不定式常与疑问词连用构成短语：Eg:whattodo/howtodo/wheretogo/whentostart/whichtobuyDoyouknowhowtouseacomputer?（二）如何表达同意和反对agreement disagreement1.You’reright. 1.Idon’tagree.2.That’strue. 2.Idon’tthinkso.3.Iagree. 3.I’mnotsureaboutthat.4.Yes,Ithinkso,too. 4.Ofcoursenot.5.That’strue….. 5.Ithinkyouarewrong.（三）词组1.apopulartypeofwriting一种流行的文学体裁2.thinkof认为3.wantsb.todosth.想让某人做某事wanttodosth.想做某事4.decidetodo决定做某事5.encouragesbtodo鼓励某人做某事6.suchas…..例如7.beinterestedin….对……感兴趣8.asaresult…..结果；由于……结果asaresultofEg:Hewaslateforschoolthismorningasaresultofthesnow.由于下雪他今早上学迟到了。Heworkedhard,andasaresult,hegotpromotedquickly.他工作努力，被提拔得很快。9.cometrue成为现实Eg:HesaidthatIwouldbecomeadoctorandithascometruenow.他说我会成为医生，现在这预言成真了。10.makesb+rich使某人……富有makesbdo使某人……做某事Eg:Whatyouaredoingwillonlymakethingsworse.你现在所做的只会使情况更糟。
