高中英語Unit3AhealthylifeLearningaboutLanguage課件新人教選修6

Unit3

AhealthylifeLearningaboutLanguage語法精講·思維構(gòu)建it的用法(Ⅰ)【語法感知】觀察上面對話,并類比填空。1.__ishalfpastthreenow.

2.It’salovelybaby.Is__aboyoragirl?

3.Thatvaseisvaluable.__ismorethan200yearsold.ItitIt【語法精講】一、it作人稱代詞1.用于上文提到過的指人以外的一切生物、無生命的東西和事情。*(2018·全國卷Ⅰ)Coloristhekeytomakingaroomfeelthewayyouwantittofeel.為了讓房子擁有你想要的感覺,顏色是關(guān)鍵。【名師點津】(1)it:指代同名同物,表示特指,指代上文所提到的同一個對象。作主語時復(fù)數(shù)為they,作賓語時復(fù)數(shù)為them。(2)one:指代同類異物,表示泛指,指代上文所提到的某一類對象中的一個。one既可代替人,也可以代替物,但只能代替可數(shù)名詞,相當(dāng)于a/an+單數(shù)可數(shù)名詞。復(fù)數(shù)形式是ones。(3)that:①用于遠(yuǎn)指,表示特指,指代上文所提到的同一個對象,經(jīng)常與this相對使用。復(fù)數(shù)為those,this的復(fù)數(shù)是these;②用于比較結(jié)構(gòu),以保持比較對象相同,為了避免重復(fù),相當(dāng)于the+名詞,表示特指。注意:①one單獨使用時不用冠詞修飾,當(dāng)有形容詞修飾時,one前需加a/an,有限制性的定語修飾時前面加the;②that不能帶前置定語,但可以有后置定語。Ihavelostmyumbrella;I’mlookingforit.我丟了傘,我現(xiàn)在正在找它。(同名同物)itthatone*Itistwomilestotheislandfromhere.(指距離)從這里到那座島有兩英里遠(yuǎn)。*(2018·全國卷Ⅲ)Adultsunderstandwhatitfeelsliketobefloodedwithobjects.(指事物的狀態(tài))大人明白(屋里)塞滿東西是什么感覺?！炯磳W(xué)活用】指出下列句子中it的含義。(A.指時間B.指距離C.指事物的狀態(tài)D.指天氣)(1)Itismerely2kilometresfromourschooltothestation. (

)(2)Iteventuallyclearedupafterafewconstantrainydays. (

)(3)Wewouldsitbythelake,dreamingofwhatitwouldbeliketolivethere. (

)(4)ItwasApril1stwhenthegovernmentissuedabanonsmokinginpublic. (

)答案:(1)～(4)BDCA三、it作形式主語當(dāng)動詞不定式、動名詞或從句作主語時,通常把它們置于句末,而用it作形式主語,放在句首。1.作形式主語替代主語從句。(1)Itbe+adj.+that...(常用于此句型的形容詞有certain,doubtful,important,necessary,easy,strange,natural等)(2)Itbe+過去分詞+that...據(jù)……(常用于此句型的過去分詞有:said,announced,believed,reported,known,hoped等)(3)Itbe+a/an+n.+that...做……是……的(常用于此句型的名詞有pity,honour,shame,wonder等)(4)Ithappens/seems/looks/appears/turns(ed)out/occurredtosb.that...碰巧/似乎/看起來/結(jié)果/某人突然想起……*Itisadvocatedthatweshoulddonatemoneyoranylivingarticlestothechildren.人們提倡我們應(yīng)該向那些兒童捐贈錢和生活用品。*Itisapitythatyoudidn’twinthescholarship.你沒獲得獎學(xué)金真遺憾?！局R延伸】①句型(1)中的形容詞為necessary/important/strange等時,主語從句的謂語部分用“should+動詞原形”結(jié)構(gòu)。②句型(2)中的過去分詞為表示“建議、命令、要求”等意思時,主語從句的謂語部分用“should+動詞原形”結(jié)構(gòu),且should可以省略。2.作形式主語替代不定式。(1)Itis+adj.+(for/ofsb.)todosth.(2)It+is/was+one’sturn(duty,pleasure,apity,greatfun,ahabit,time,arule,ashame,nowonder)+todosth.(3)Ittakessb.sometimetodosth.(4)Itcostssb.somemoneytodosth.(5)It’suptosb.todosth.應(yīng)由某人(負(fù)責(zé))做……*(2020·天津高考)ItwassogoodtofeelacceptedforwhatI’mgoodat.感覺自己擅長的事被人接受了,真是太好了。*Itisimpossibletogettherebyboat.

坐船到那里是不可能的。*Ittookmeapproximatelytwomonthstotranslatetheforeignnovel.翻譯那本外國小說花費了我大約兩個月的時間。*It’suptoustohelpthoseinneed.我們有責(zé)任幫助那些有困難的人?！久麕燑c津】①句型(1)中的形容詞表示對邏輯主語的評價時,不定式前用ofsb.,常見的形容詞有brave,careless,foolish,honest,kind,modest,rude,silly,stupid,wise,wrong等;②若句型(1)中的形容詞表示重要性、緊迫性、頻繁程度、難易、安全等情況,則不定式前用forsb.。常見的形容詞有important,necessary,easy,hard,natural,impossible等。3.作形式主語替代動詞-ing形式。有些句型中it作形式主語,真正主語為動詞-ing形式:(1)It’suseless/(of)nouse/(of)nogooddoingsth.做……是徒勞的/沒有用的/沒有益處的。(2)Itisawasteof...doingsth.做某事是浪費……的。*It’snogoodputtingthingsoffbecauseyouhavetogetthemdoneanyway.推遲該做的事情是沒有益處的,因為無論如何你都要去做。*It’snousetakingthiskindofmedicine.吃這種藥沒有用。*Itisawasteoftimepersuadingsuchapersontojoinus.勸說這種人加入我們是浪費時間。【即學(xué)活用】(1)_________________forotherpeopletomakedecisionsforyou.等別人替你做決定是沒有用的。

(2)___________________Ihadleftmyticketathome.

我突然想起我把票忘在家里了。(3)(2021·全國甲卷)___________historyiswrittenbythevictors,andthosevictorssetthestandardsforadmissiontothegeniusclub.據(jù)說歷史是由勝利者書寫的,而這些勝利者為天才俱樂部設(shè)定了準(zhǔn)入標(biāo)準(zhǔn)。

ItisnousewaitingItoccurredtomethatIt’ssaidthat四、it作形式賓語1.用于“主語+及物動詞+賓語+賓語補足語”句型。該句型中,當(dāng)賓語是不定式、動詞-ing形式或賓語從句時,常使用it作形式賓語,而把真正的賓語——不定式、動詞-ing形式或賓語從句置于補足語之后。常用于此句型的動詞有:make,think,consider,believe,guess,suppose,declare,imagine,feel,find,discover,notice,regard等。*(2020·浙江高考)Myparentsmadeitapointfortheirtwokidstospendtimeoutside,nomattertheweatherorseason.我的父母堅持讓他們的兩個孩子花時間在戶外待著,不管什么天氣或季節(jié)。*Theyconsidereditimportanttohavetheworkdoneontime.他們認(rèn)為按時完成這項工作很重要。itittosmoketry→trying在on后加it五、it常用的固定搭配makeit成功、做到、說定、趕上、及時到達(dá)asitis事實上,實際情況是……;照原樣ifithadn’tbeenfor...如果不是……,要不是……that’sit到此為止、僅此而已;就是這樣,完全正確Takeiteasy.不要慌,別擔(dān)心。Believeitornot.信不信由你。Italldepends.那得看情況而定。takeiteasy學(xué)情診斷?課堂測評What→Ittry→tryingfor→ofAs→Itmake后加itⅡ.句型轉(zhuǎn)換1.Tomysurprise,hethoughtthatitwasimpossibleforhimtolearnEnglishwell.→Tomysurprise,hethought___________forhimtolearnEnglishwell.

2.36studentsaresaidtohavepassedtheexaminourclass.→____________36studentshavepassedtheexaminourclass.

3.Togiveupsmokingisnoteasy.→____noteasytogiveupsmoking.

itimpossibleItissaidthatItis4.Arguingaboutitisuseless.→____uselessarguingaboutit.

5.Ibecamestrongerandstronger,whichmademyparentsglad.→Ibecamestrongerandstronger,and_____________________.

6.Hefeltitwashisdutytoservethecustomersheartandsoul.→Hefelt_________toservethecustomersheartandsoul.

7.Inthewest,peoplesendChristmaspresentstotheirrelativesandfriends,makingitarule.→Inthewest,people____________tosendChristmaspresentstotheirrelativesandfriends.

Itisitmademyparentsgladithisdutymakeitarule8.Whenandwheretoholdthematchhasn’tbeendecided.→___________________whenandwheretoholdthematch.

9.Inmyopinion,tofinishourworkinaweekwasdifficult.→Ifound_________tofinishourworkinaweek.

10.Wemeteachothertwoweeksago.→___________________sincewemeteachother.

Ithasn’tbeendecided