初三英语Unit 7~9 Review知识精讲 教育科学版.doc

用心爱心专心116号编辑初三英语Unit7~9Review知识精讲教育科学版【本讲教育信息】一.教学内容：Unit7~9:Review.二.重点、难点：定语从句三.具体内容：在复合句中修饰名词和代词的从句叫做定语从句。被定语从句修饰的名词或代词叫做先行词。引导定语从句的关系代词有who，whose，whom，which，that，as;引导定语从句的关系副词有when，where，why;关系代词在定语从句中做主语，宾语，定语。关系副词在定语从句中做状语。（一）由who引导的定语从句，who在从句中做主语（口语中也可做宾语），修饰表示人的先行词。例如：Thisisthemanwhohelpedme.Doyouknowthecomradewhospokejustnow?Theboywho//whomwesawyesterdayisJohn’sbrother.（二）（whom引导的定语从句，whom在从句中作宾语，修饰表示人的先行词，口语中可以省略。Thedoctor（whom）youarelookingforisintheroom.Theperson（whom）youjusttalkedtoisMr.Li.＝ThepersontowhomyoujusttalkedisMr.Li.（介词后whom不能省略）Thebabieswhomthenursesarelookingforareveryhealthy.（固定短语中的介词一般不省略，介词仍放在动词之后）（三）whose引导的定语从句，whose在从句中作定语，修饰表示人或物的先行词。DoyouknowthewomanwhosenameisMary.Passmethedictionarywhosecoverisblack.（四）that引导的定语从句，that在从句中做主语或宾语，修饰表示人或物的先行词，作宾语时可省略，不能放在介词后面作宾语。Theletter（that//which）Ireceivedwasfrommyfather.Ican’tfindtheletterthat//whichcamethismorning.Doyoustillrememberthedays（that//which）wespenttogether?Thisisthemanthat//whohelpedme.Thehouse（that//which）weliveinisnotlarge.＝Thehouseinwhichweliveisnotlarge.Thedoctor（that//whom//who）youarelookingforisintheroom.（五）which引导的定语从句，which在从句中做主语，也可做宾语，或介词的宾语，修饰表示物的先行词。先行词可以是词、短语、句子。Thisisthebook（which/that）youwant.Thebuildingwhich//thatstandsneartheriverisourschool.Theroominwhichthereisamachineisaworkshop.（介词后面的which不能省略）Thehouse（which/that）weliveinisnotlarge.Thisisthewatch（which/that）hewaslookingfor.（在含有介词的动词固定词组中，介词只能放在动词之后，不能放在which之前）（六）that和which都可以修饰表示物的先行词，但是下列情况只能用that。①先行词为不定冠词all，few，little，much，everything，nothing等。All（that）youhavetodoistopractiseeveryday.Thereisn’tmuch（that）Icando.②先行词被序数词或形容词的最高级修饰时。Thefirstlesson（that）Ilearnedwillneverbeforgotten.Thisisthebestfilm（that）Ihaveeverseen.③先行词被all，any，every，few，little，no，some等不定代词修饰时。Ihavereadallthebooks（that）yougaveme.④先行词被theonly，thevery，thelast，thesame等修饰时。ThewhitefloweristheonlyonethatIreallylike.ThisistheverybookthatIwanttoread.ThisisthesamebookthatIwanttoread.（同一本书）----ThisisthesamebookasIwanttoread.⑤当主句为以who或which开头的特