Unit+4+Natural+disasters+Discovering+useful+Structures+课件 【知识精讲精研】高中英语人教版（2019）必修第一册

Unit4NaturaldisastersDiscoveringusefulstructuresAttributiveClause定语从句100%参与你的高考连续3个单元的语法，都是定语从句语法填空写作阅读理解，完形填空的文章（不给词空）问题导学

什么是定语从句？1定语从句的关系词有哪些？2Questions什么是定语？什么词可以作定语？修饰名词和代词的成分，作定语的除了形容词外，还有代词、数词、名词、介词短语。定语:myteacherthreeboysclothesshopthestudentsinclass找出下面句子中的定语：1.Sheisabeautifulgirl.2.ThesleepingboyisTom.3.Thereissomethingimportantintoday'snewspaper.

4.ThegirlbehindthetreeisKate.5.Themandrivingtoofastwasadrunk.

ThegirlisfromAmerica.ThegirlIcalledjustnow.

Thegirl

(whom)Icalledjustnow

isfromAmerica.They’retalkingaboutthefilm.Ihaveseenthefilm.

They’retalkingaboutthefilm(that)I’veseen.定语从句怎么来的？Ihavereadthenewspaper.Thenewspapercarriestheimportantnews.

Ihavereadthenewspaper

whichcarries

theimportantnews.Thegirlgotfirst.Thegirl’sfatherhadgivenusareport.

Thegirlwhosefather

hadgivenusareportgotfirst.Ishowedhimtheletter.Ireceivedtheletterthismorning

Ishowedhimtheletter(which)Ireceivedthismorning.

JanehasborrowedthebookthatwaswrittenbyLaoshe.ThebookwaswrittenbyLaoshe.Janehasborrowedthebook.Sheisabeautifulgirl.Sheisagirlwhoisbeautiful..Thisisthecupbrokenbyme.Thisisthecupwhichisbrokenbyme..1.主句：整个句子的主干部分。2.（定语）从句：对主句起修饰作用的句子。定语从句结构：先行词（名词+代词）+关系词（引导词）+从句定语从句的种类：限定性定语从句和非限制性定语从句在主从复合句中，对某一名词或代词起修饰作用的从句叫定语从句。被修饰的名词或代词叫先行词，引导定语从句的连接词叫关系词。定语从句一般位于先行词后1.引导定语从句2.代替先行词3.在从句中担当一个成分Thestudentswhoarehavingclassarefromclass49.先行词关系代词1.IknowtheboywhocanspeakEnglishwell.2.ThegirlwhomImetisLucy.3.I'mreadingabookwhosecoverisblue.4.Workersbuiltsheltersforsurvivorswhosehomeshadbeendestroyed.5.Ilikethebikewhichyouboughtyesterday.6.Thearmysent150，000soldierstoTangshantodigoutthosewhoweretrappedandtoburythedead.

7.Thereweredeepcracksthatappearedinthewellwalls.找出下面的定语从句部分Theusageoftherelativepronouns1.that在从句中作主语或宾语，指人或物，作宾语时可省略。

Aplaneisamachinethatcanfly.作主语；指物

Thenoodles

(that)Icookedweredelicious.作宾语；指物

Let’saskthemanthatisreadingabookoverthere.作主语；指人

Thegirl

(that)wesawyesterdayisJim’ssister.

作宾语；指人关系代词：which,who,whom,that,whose2.who在从句中作主语和宾语,whom

在从句中作宾语；都指人。

TheforeignerwhovisitedourschoolyesterdayisfromCanada.主语；指人

TheboywhobrokethewindowiscalledMichael.

主语；指人

Theperson(whom/who)youjusttalkedtoisMrLi.

宾语；指人

MrReadistheprofessortowhomyoushouldwrite.宾语；指人在定语从句中紧接着介词的只能用which和whom。指人用whom，指物用which3.which

在从句中作主语、宾语或介词宾语,指物。

Theyplantedthetreeswhich

didn’tneedmuchwater.

Thefishwhich

weboughtwerenotfresh.

Thisisthehousewhich

welivedinlastyear.

→Thisisthehouse________welivedlastyear.主语；指物宾语；指物介词宾语；指物in

whichwhich作介词宾语时，介词既可放在关系代词which之前，也可以放在从句中动词之后where4.whose在从句中作定语,修饰人或物，意为“……的”，可与

ofwhich(whom)the...互换。

MissFloweristheteacherwhosehousecaughtfirelastweek.ofwhomthe

Thisistheboywhosecompositiontheteachertalkedof.ofwhomthe

Thisisthebookwhosecoverisblue.ofwhichthe

Iamsureshehassomething

(that)youcanborrow.

I’vereadallthebooksthatarenotmine.

Thisisthefirstbook(that)hehasread.

Thisistheverybookthatbelongstohim.

Theytalkedofthingsandpersons

thattheyremembered.注意

that和which在指物的情况下一般可以互换，但在下列情况中，一般用that而不用which下列情况中，定语从句中关系代词一般用that而不用which：先行词为all,everything,nothing,something,anything,little,much等不定代词时。2.先行词被all,every,no,some,any,little,much等修饰时。3.先行词被序数词或形容词最高级修饰时。4.先行词被the

only,the

very,the

same,the

last修饰时。5.先行词既有人又有物的时候，只能用that。Summary1.Hereissomething_____Iwilltellyou.2.Doyouhaveanything______youdon’tunderstand?thatthat先行词是everything,nothing,anything,something,much,little,none等不定代词，引导定语从句用that。1.I’vereadallthebooks_____youlentme.that2.Thisistheonlybike_____Iwanttobuy.that先行词被any,some,no,much,few,little,every,all,thevery,theonly,thelast修饰时,引导定语从句用that。1.ThisisthebestTV_____ismadeinChina.2.Thefirstmuseum_____hevisitedinChinawastheHistoryMuseum.thatthat先行词被形容词最高级或序数词修饰时，引导定语从句用that。Hetalkedhappilyabouttheplayersandbasketball_____interestedhimgreatlyintheschool.先行词中既有人又有事物时，引导定语从句用that.that

Whichisthebike______youlost?that当主句已有疑问词which时，关系词用thatHerearesomeofthepeople

homesweredestroyedbythetyphoon.Theterribleshakingofthebuildingwokeupallthepeople

wereasleep.Thenextday,peopleputupshelterintheopenairusinganything

theycouldfind.Severaldayslater,mostofthebuildings

hadbeendamagedbythehurricanewererepaired.Theinjuredboy

motherwaslostinthedisasterwastakentothehospital.Thewomanwroteathankyoulettertothesoldierby

shewasrescued.Isthisyoung