高中英語課件-it的用法

Goodmorning,everyone!1優(yōu)秀課件，精彩無限！①Itisnevertoooldtolearn.

②Itiseasiertofallthantorise.

③Itisnousecryingoverspilt(溢出的)milk.

④Itneverrainsbutitpours(潑水).

Proverbs(諺語)with“It”活到老,學(xué)到老。摔倒容易爬起來難。覆水難收。不鳴則已,一鳴驚人。2優(yōu)秀課件，精彩無限?、軮tiseasytoopenashopbuthardtokeepitalwaysopen.⑥Ittakesthreegenerations(代,輩)tomakeagentleman.

創(chuàng)業(yè)容易守業(yè)難。十年樹木，百年樹人。3優(yōu)秀課件，精彩無限！Grammar:

Useof“It”4優(yōu)秀課件，精彩無限！2023/6/7

課文原句再現(xiàn)1.It’sabeautifuldayhereandIamsittingunderthebigtreeattheendofthegarden.2.Yourmothertellsmethatyoustartedsmokingsometimeagoandnowyouarefindingitdifficulttogiveitup.3.Believeme,Iknowhoweasyitistobeginsmokingandhowtoughitistostop.5優(yōu)秀課件，精彩無限！Theuseof“it”1.用作人稱代詞，代表前面提到的人或事物。Who’sit?_________me.Lookatthepicture._____isapictureofourschool.

It’sIt2.用于代替指示代詞this和that。---Isthisjacketyours?---Yes,______is.it6優(yōu)秀課件，精彩無限！Readandanalyzethefollowingsentences.ItisFridaytoday.ItwasverycoldlastMonday.Itisabout8:30now.Itisabout25kmfromLongxiantoBazi.ItliesinthesouthofShaoguancity.Itis40°C!Yougotahighfever!Conclusion:it可以用作非人稱代詞，表示_____,_____,______,______,______,_____等。DateweathertimedistanceplaceTemperature日期天氣時(shí)間距離地點(diǎn)溫度7優(yōu)秀課件，精彩無限！e.g:______a.Jimisatthedoor．____wantstoseeyou．b.Someoneisatthedoor．____mustbeJim．A.That,ItB.It,HeC.He,ItD.Who,He一般說來，在指代身份或性別明確的人時(shí)，通常要根據(jù)情況用代詞he／she；若是指代身份或性別不明的人，則用代詞itBackC8優(yōu)秀課件，精彩無限！1.Ican’tfindmypen.I’mgoingtobuy_____.2.Lifetodayisbetterthan______intheolddays.3.Ican’tfindmypen.Imusthavelost_____.

_____用來指代前面提到的可數(shù)名詞，所指的是事物本身；______則用來替代前面出現(xiàn)過的可數(shù)名詞，泛指，指一類事物中的一個(gè).______用來代替不可數(shù)名詞或單數(shù)可數(shù)名詞，特指。onethatit

itonethat9優(yōu)秀課件，精彩無限！It作為形式主語當(dāng)不定式、動名詞、從句等用作句子主語時(shí)，為保持句子平衡，通常把真正的主語放在句末，而在句首使用形式主語it.10優(yōu)秀課件，精彩無限！2023/6/7eg:Itisillegal（forateenager）todriveacarwithouta

license.Itisnecessaryforyoutogivehimaletter.Conclusion：在句1和句2中it的作用是___________,真正主語是________。

形式主語不定式短語（1）It+be+adj.+（forsb.）todosth.此處adj.通常為描述事件的形容詞：easy，difficult，hard，necessary，impossible，likely，right，wrong，important，obvious，useful，useless，dangerous…11優(yōu)秀課件，精彩無限！2023/6/7（2）It+be+adj+ofsb.todosth此處adj.通常為描述人的形容詞：kind，unkind，nice，rude，cruel，considerate，careless，foolish，stupid，wise，crazy.eg:1.It‘skind

of

youtohelpmewiththeproblem.某人做某事某人是…….2It’sfoolishofyoutoquityourjobnow.12優(yōu)秀課件，精彩無限！2023/6/73.Itisnogoodcryingoverspiltmilk.4.Itisnousecastingpearlsbeforeswine

.在句3與句4中，it的作用是_________,真正主語是____________.形式主語動名詞短語構(gòu)成如下結(jié)構(gòu)：Itis+nouse/nogood/notanygood/notanyuse+doingsth.

13優(yōu)秀課件，精彩無限！Readandanalyzethefollowingsentences.Itisobviousthatthewaterwastoblame.Isitpossiblethathewillbecomethechairmanofourcountry?ItisamazingthatatmyageIstilllooklikeastudent!Analysis：it是______,句子真正的主語是——____________形式主語that引導(dǎo)的主語從句Conclusion：Itis+____+that從句adj.14優(yōu)秀課件，精彩無限！跟蹤訓(xùn)練1：Itis+adj.+that從句很明顯他已經(jīng)知道了那個(gè)壞消息。姚明籃球比易建聯(lián)打得好是肯定的。Itisobviousthathehasknownthebadnews.ItiscertainthatYaomingplaysbasketballbetterthanYijianlian.15優(yōu)秀課件，精彩無限！Itissaidthat…據(jù)說……

Itisreportedthat…Itissupposedthat…Itishopedthat…Itiswellknownthat…據(jù)報(bào)導(dǎo)……據(jù)推測……希望……眾所周知……普遍認(rèn)為……有人建議……Itissaid

(reported....)

that...Itissuggestedthat…Itisgenerallyconsideredthat…該句型中的it仍是形式主語，真正主語是that引導(dǎo)的主語從句。

16優(yōu)秀課件，精彩無限！

1.吸煙危害健康，這是事實(shí)。

2.碰巧我們在同一間大學(xué)。

3.據(jù)說日本發(fā)生了地震。

4.有人建議他應(yīng)該立刻戒煙。

Itisafactthatsmokingdoesharmtohealth.Ithappensthatweareinthesamecollege.

__________thereisanearthquakeinJapan.Itissaidthat________________heshouldquitsmokingatonce.Itissuggestedthat17優(yōu)秀課件，精彩無限！二、it作形式賓語

18優(yōu)秀課件，精彩無限！1.Ifounditveryinterestingtostudy

English.我發(fā)現(xiàn)學(xué)英語非常有趣。

2.Ithinkitnousearguingwithhim.我認(rèn)為和他爭吵沒有用。3.Hemadeitclearthathewasnot

interestedinthissubject.他非常清楚地表示他對那門學(xué)科不感興趣。

小結(jié)：it在句中充當(dāng)_________，真正賓語可以由______以及_________短語充當(dāng)。還可以由______引導(dǎo)的賓語從句充當(dāng)。不定式動名詞that形式賓語19優(yōu)秀課件，精彩無限！

總結(jié)：當(dāng)復(fù)合賓語中的賓語是不定式、動名詞賓語從句時(shí),往往把真正的賓語放在它的補(bǔ)足語后面，而用it作形式賓語,放在賓語補(bǔ)足語之前。

該句型中的it作形式賓語,常用的動詞有think,believe,make,find,consider,feel等。

20優(yōu)秀課件，精彩無限！在一些固定用法中考查常見的固定用法有:makeitforgetitbelieveitornotDon’tmentionitItdoesn’tmatterIt(That)dependsGotitIt’shardtosayIt’suptoyoutodosth.takeit/thingseasy成功，做到，趕上等別提了，忘了它吧信不信由你別提了，表示不用謝沒關(guān)系視情況而定明白了，懂了很難說由你來決定做某事不要慌，別擔(dān)心，沉住氣21優(yōu)秀課件，精彩無限！Rewritethesentencesusingan“it”structure.1Givingupsmokingisdifficult.(Itis…)2Mostpeoplebelievesmokingcausescancer.(Itisbelievethat…)3Don’ttrytoquitonastressfulday.(It’snouse…)4youcouldsufferfrombadhealthifyoukeepsmoking.(Itislikelythat…)Itisdifficulttogiveupsmoking.Itisbelievedthatsmokingcausescancer.Itisnousetryingtoquitonsastressfulday.Itislikelythatyoucouldsufferfrombadhealthifyoukeepsmoking.22優(yōu)秀課件，精彩無限！

Onemidnight,

wasrainingheavily.Marywaslyinginbed.Shecouldn'tfallsleep.Suddenly,sheheardsomeoneknockingatthedoor.“Whois

?”Sheasked.Shelookedattheclockhungonthewall.

wasstrikingtwo.“

isme.”O(jiān)nemananswered.“

wasimpossibleforhimtoappearhere.”shethought.“John?Is__

you?”“Yeah!isme”themananswered.Sherushedtoopenthedoor.Johnwasjuststandinginfrontofher.HesaidtoMaryexcitedly,“Imissedtheplane.

wassaidthattheplane

Iwouldtakecrasheddownthreehoursago.ItwasinthatplaneIshouldhavegonetoNewYork.Afterthis,Ithink

clearlythatIloveyousomuch

Iwanttobemarryyou.”ititItItItItItitthatthat/whichthatthatFillintheblanks23優(yōu)秀課件，精彩無限！Translation1.是到戒煙的時(shí)候了。(quit)

Itistimetoquitsmoking.2.讓人驚訝的是在我這個(gè)年紀(jì)我依然這么健康。(Itisamazingthat...)

ItisamazingthatatmyageIamstillsofit.24優(yōu)秀課件，精彩無限！ItseemsstrangethatthemanwhohaddelevopedcommunismshouldhavelivedanddiedinLondon.3.一旦你吸煙上了癮,你會發(fā)現(xiàn)要把它戒掉很難。(addict...to;tough)O