2021英語(yǔ)人教版選擇性必修第三冊(cè)課件UNIT-2-Section-B-

SectionB

LearningAboutLanguageSectionBLearningAboutLanguⅠ.知識(shí)體系圖解

重點(diǎn)詞匯1.surgeonn.

→surgeryn.

2.shavevt.&n.

3.beardn.

4.cigaretten.

5.drugn.

6.

vt.&vi.組成;作曲;撰寫

7.

n.解放;擺脫

8.

vt.打擾;攪亂;使煩惱

9.

n.?？漆t(yī)生;專家

10.

n.顧問(wèn);高級(jí)顧問(wèn)醫(yī)師

11.

vt.跳過(guò);不參加;悄悄溜走vi.蹦蹦跳跳地走;跳繩n.蹦跳

外科醫(yī)生

外科手術(shù);外科學(xué)

剃(須發(fā));刮臉

胡須;絡(luò)腮胡子

香煙;卷煙毒品;藥物

compose

liberation

disturb

specialistconsultant

skipⅠ.知識(shí)體系圖解重點(diǎn)詞匯1.surgeonn.重點(diǎn)短語(yǔ)1.

下定決心

2.

由……組成(或構(gòu)成)的

3.

剃掉;刮去

4.

采取行動(dòng)

5.

找借口

6.

簡(jiǎn)單說(shuō)

7.beginwith

8.beincontrolof

9.loseweight

10.cutout

11.takeup

12.stickto

makeupone’smind

becomposedofshaveoff

takeaction

makeexcuses

simplyspeaking

以……開始

控制

減肥

剪去;刪除占用堅(jiān)持

重點(diǎn)短語(yǔ)1.重點(diǎn)句式

Neithertoomuchnortoolittleisgood.重點(diǎn)語(yǔ)法

動(dòng)詞不定式作主語(yǔ)

重點(diǎn)句式NeithertoomuchnortooⅡ.釋義匹配1.surgeon

A.whensomethingorsomeoneisfreed2.liberation B.tonotdosomethingthatyouusuallydoorshoulddo3.disturb C.adoctorwhoisspeciallytrainedtoperformmedicaloperations4.skip D.hairthatsomemenallowtogrowonthelowerpartoftheirfaces5.beard E.tointerruptsomeonesothattheycannotcontinuewhattheyaredoing答案

1.C

2.A

3.E

4.B

5.DⅡ.釋義匹配Ⅲ.介(副)詞填空1.Liftingheavyweightscanlead

ariseinbloodpressure.

2.Youcanfind

whethertheyarepreparedtosharethecostwithyou.

3.Herefusedtogive

inspiteofmanydiscouragementsinhiscareer.

4.Asparents,wehavearesponsibilitytogiveourchildrenasense

belonging.

5.Youarefullyincontrol

yourownhabits,yourownbody,andyourownlife.

to

outupofofⅢ.介(副)詞填空tooutupofof1.Weneedtomake

up

our

mindsandshowsomediscipline,andmakesmallchangesovertime.我們需要下定決心,遵守紀(jì)律,并隨著時(shí)間的推移做出一些小小的改變?！驹~匯精講】

makeupone’smind下定決心

I’vemade

up

my

mindtogotocollegeafterIfinishmiddleschool.我決定中學(xué)畢業(yè)后去上大學(xué)。Theymade

up

their

mindstoliveamodernlife.他們下定決心要過(guò)現(xiàn)代的生活。Oncewehave

made

up

our

mindstocheerup,itistimetotakeaction.一旦我們決定振作起來(lái),就是時(shí)候采取行動(dòng)了。【溫馨提示】使用make

up

one’s

mind短語(yǔ)時(shí)需要注意,mind的單復(fù)數(shù)要根據(jù)主語(yǔ)的單復(fù)數(shù)來(lái)變化。重點(diǎn)詞匯

1.Weneedtomakeupourminds【詞匯拓展】

Hepromisedtokeepmywishesin

mind.他承諾要記住我的愿望?！驹~匯拓展】Hepromisedtokeepmy2021英語(yǔ)人教版選擇性必修第三冊(cè)課件UNIT-2-Section-B-2021英語(yǔ)人教版選擇性必修第三冊(cè)課件UNIT-2-Section-B-2.Simply

speaking,ahealthylifestyleisaboutfindingtherightbalanceandmakinggoodchoices.簡(jiǎn)單地說(shuō),健康的生活方式就是找到恰當(dāng)?shù)钠胶?做出好的選擇?！驹~匯精講】

simplyspeaking簡(jiǎn)單地說(shuō)Simply

speaking,ifonewordcarriesatleasttwomeanings,itcanbecalledapolysemousword.簡(jiǎn)單地說(shuō),如果一個(gè)單詞有兩種以上的意義,那么就可稱之為多義詞。Simply

speaking,weknowwhatyourneedsare!簡(jiǎn)單來(lái)說(shuō),我們最清楚明白您的需要!2.Simplyspeaking,ahealthyli【詞匯拓展】

Generally

speaking,peopleliketohearcomplimentsfromothers.總的來(lái)說(shuō),人們都喜歡聽到別人的稱贊。Frankly

speaking,it’snoteasytobeascientist.坦白地說(shuō),成為科學(xué)家不是一件容易的事情?！驹~匯拓展】Generallyspeaking,peop2021英語(yǔ)人教版選擇性必修第三冊(cè)課件UNIT-2-Section-B-2021英語(yǔ)人教版選擇性必修第三冊(cè)課件UNIT-2-Section-B-3.Lifeiscomposedofmanyelements,suchasfamily,friends,study,work,entertainmentandsoon.生活是由家庭、朋友、學(xué)習(xí)、工作、娛樂(lè)等多種元素組成的?！驹~匯精講】

composevt.&vi.組成;作曲;撰寫Tenmencomposethecommittee.委員會(huì)由十人組成。Vivaldicomposedalargenumberofveryfineconcertos.維瓦爾蒂創(chuàng)作了大量非常優(yōu)美的協(xié)奏曲。Themanageraskedthesecretarytocomposeareport.經(jīng)理要求秘書寫一個(gè)報(bào)告。3.Lifeiscomposedofmanyele【詞匯拓展】

Everysubstance,nomatterwhatitis,is

composed

ofverysmallparticlescalledmolecules.每種物質(zhì),不論它是什么,都是由一些被稱為分子的很小的粒子構(gòu)成的。Theirdietconsistslargelyofvegetables.他們的日常飲食以蔬菜為主。【詞匯拓展】Everysubstance,nomatt2021英語(yǔ)人教版選擇性必修第三冊(cè)課件UNIT-2-Section-B-2021英語(yǔ)人教版選擇性必修第三冊(cè)課件UNIT-2-Section-B-2021英語(yǔ)人教版選擇性必修第三冊(cè)課件UNIT-2-Section-B-4.TojointhePeople’sLiberationArmy,itisrequiredformentoshaveofftheirbeards.要加入中國(guó)人民解放軍,男人必須剃掉胡須。【詞匯精講】

shavevi.,vt.&n.剃(須發(fā));刮臉MrBrowntookabathandshavedbeforedinner.布朗先生在晚餐前洗了澡并刮了臉。Hehadshavedhisfaceuntilitwassmooth.他把臉刮到光滑為止。Heneverseemedtoneedashave.他似乎從不需要刮臉。4.TojointhePeople’sLiberat【詞匯拓展】shaveoff剃掉;刮去I’vedecidedtoshave

offmybeard.我決定刮胡子?！驹~匯拓展】2021英語(yǔ)人教版選擇性必修第三冊(cè)課件UNIT-2-Section-B-5.Itwasnotpolitetodisturbyourneighbourswithloudmusiclastnight.昨晚,用很響的音樂(lè)打擾你的鄰居是不禮貌的。【詞匯精講】

disturbvt.打擾;攪亂;使煩惱Idreamabouthim,dreamssovividthattheydisturbmefordays.我夢(mèng)到他了,夢(mèng)是那么栩栩如生以至于困擾了我好幾天。Didyousleepwell?Ididn’twanttodisturbyou.Youlookedsopeaceful.你睡得好嗎?我不想打擾你。你看起來(lái)如此平靜。Themanagerwillbeangryifyoudisturbhimwhenhe’sinconference.經(jīng)理開會(huì)時(shí)如果你打擾他,他會(huì)生氣的。5.Itwasnotpolitetodisturb【詞匯拓展】

ThencamethedisturbingnewsthatDollyhadbecomeseriouslyill.接著傳來(lái)了多莉病重的令人不安的消息。Thenewsreallymademedisturbed.這個(gè)消息的確令我不安?！驹~匯拓展】Thencamethedisturbin2021英語(yǔ)人教版選擇性必修第三冊(cè)課件UNIT-2-Section-B-重點(diǎn)句式Neither

too

much

nor

too

little

is

good.不多不少正合適?！揪涫狡饰觥縩either...nor...“既不……也不……”。其含義是否定的,可連接任意兩個(gè)并列的成分。ProfessorHisamatsuspokeneitherEnglishnorGerman.久松教授既不會(huì)講英語(yǔ),也不會(huì)講德語(yǔ)。Icangiveyouneitheranopinionnoranyadvice.我既不能給你意見,也不能提供任何建議。Thecomposerneitherworriednorcaredaboutpublicopinion.這位作曲家對(duì)輿論既不擔(dān)心,也不在意。重點(diǎn)句式【句式拓展】(1)neither...nor連接兩個(gè)名詞或代詞作主語(yǔ)時(shí),謂語(yǔ)動(dòng)詞要遵循“就近一致”原則。Neitherthestudentsnortheteacherknowsanythingaboutit.同學(xué)們和老師都對(duì)此一無(wú)所知。(2)遵循“就近一致原則”的其他并列連詞:【句式拓展】(1)neither...nor連接兩個(gè)名詞或代2021英語(yǔ)人教版選擇性必修第三冊(cè)課件UNIT-2-Section-B-重點(diǎn)語(yǔ)法動(dòng)詞不定式作主語(yǔ)1.不定式(短語(yǔ))作主語(yǔ)時(shí),往往由it代替它作形式主語(yǔ),不定式則移至謂語(yǔ)之后。常見的句型有:(1)Itis+名詞+todo...Webelieveitisourdutytohelpthoseinneedtomaketheworldweliveinabetterplace.我們相信我們有義務(wù)幫助那些有困難的人來(lái)創(chuàng)造一個(gè)更美好的世界。Itisanhonourformetobeinvitedtospeakatthemeeting.被邀請(qǐng)?jiān)跁?huì)上講話我感到非常榮幸。重點(diǎn)語(yǔ)法(2)Ittakessbsometime+todoIttakesthemseveraldaystoadaptthemselvestotheclimateattheheights.他們花了數(shù)天的時(shí)間才適應(yīng)高地的氣候。Ittookusawholeweektogothroughtheforest.我們花了整整一星期才穿過(guò)那片森林。(3)Itiseasy/difficult/hard/necessary(forsb)todoHoweverhardyoutry,itisdifficulttoloseweightwithoutcuttingdowntheamountyoueat.不管你多么努力,很難在不減少食物攝入量的情況下減肥。Ithinkthatitisimpossibletobetherebeforeeight.我覺得在8點(diǎn)之前趕到那里是不可能的。(2)Ittakessbsometime+to(4)Itisclever/wise/good/careless/honest/kindofsbtodo...Itwasreallyverykindofyoutogivemealifthome.你能送我回家真是太好了。Itisfoolishofthemtoturndowntheproposal.他們拒絕那個(gè)建議實(shí)在是太愚蠢了。(4)Itisclever/wise/good/care2.不定式作主語(yǔ)位于句首,常出現(xiàn)于正式文體中。Tochangebadhabitsisnevereasy,evenwithmanyattempts.改變壞習(xí)慣絕不容易,即使經(jīng)過(guò)很多嘗試。Tohelpothersgivesapersonsatisfaction.幫助他人給人以滿足感。Toswiminthisriverisdangerous.在這條河里游泳很危險(xiǎn)。Todothisistocutthefoottofittheshoe.這樣做是削足適履。2.不定式作主語(yǔ)位于句首,常出現(xiàn)于正式文體中。【拓展】動(dòng)詞不定式可與疑問(wèn)詞when,where,how,what,which,who等組合,構(gòu)成不定式短語(yǔ),在句中可作主語(yǔ)、表語(yǔ)或賓語(yǔ)等成分。1.作主語(yǔ)Whentostarthasnotbeendecided.尚未決定何時(shí)動(dòng)身。Whattoreadisanimportantquestion.該讀些什么是一個(gè)很重要的問(wèn)題。Howtobeginismoredifficultthanwheretostop.如何開始比到哪里停止還困難?！就卣埂縿?dòng)詞不定式可與疑問(wèn)詞when,where,how,w2.作表語(yǔ)

Thequestioniswhattodonext.問(wèn)題是下一步怎么辦。Thequestionishowtocarryouttheplan.問(wèn)題是怎樣執(zhí)行這個(gè)計(jì)劃。2.作表語(yǔ)3.作賓語(yǔ)

(1)用作動(dòng)詞的賓語(yǔ)

Shecouldn’tthinkwhattosay.她想不出說(shuō)什么。Ourteacherexplainedhowtousethewordprocessor.老師向我們說(shuō)明如何使用文字處理機(jī)。3.作賓語(yǔ)(2)位于間接賓語(yǔ)后作直接賓語(yǔ)

I’llshowyouhowtodoit.我將給你講該怎么做。Shekindlyadvisedmewhattodo.她好心地勸告我該做什么。Mysistertaughtmehowtofoldpaperintoacrane.我姐姐教我如何折紙鶴。(3)作介詞的賓語(yǔ)

Ihavenoideaofhowtodoit.我不知道如何做此事。Billsaidsomethingtoheraboutwhattodo.比爾給她講了講應(yīng)當(dāng)做什么。(2)位于間接賓語(yǔ)后作直接賓語(yǔ)Ⅰ.句式升級(jí)1.Beforeyouexercise,besuretodowarming-upexerciseforafewminutes.→

,besuretodowarming-upexerciseforafewminutes.

答案

Beforeexercising2.Hearingthelecture,shewassoexcitedthatshecouldn’tgotosleep.→Hearingthelecture,shewas

tosleep.

答案

tooexcitedtogo3.Idon’tlikeplayingthepiano.Mybrotherdoesn’tlikeplayingit,either.→

mybrotherlikesplayingthepiano.

答案

NeitherInorⅠ.句式升級(jí)4.SichuanProvinceismadeupofabasinandsomemountainousareas.→SichuanProvince

abasinandsomemountainousareas.

答案

iscomposedof5.Itisalwaysbesttochooseorganicallygrownfoodsifitispossible.→Itisalwaysbesttochooseorganicallygrownfoods

.

答案

ifpossible4.SichuanProvinceismadeupⅡ.單句語(yǔ)法填空1.Itisimportant

(realize)thatthesametechnologythathelpsusmayalsoharmus.

答案

torealize2.Asweknow,itisnotgoodmanners

(refuse)others’apology.

答案

torefuse3.Itwasverykindofyou

(send)methebeautifulalbumofphotographswhicharrivedtoday.

答案

tosendⅡ.單句語(yǔ)法填空4.Itwasnecessary

(step)backfromtheprojectandlookatitasawhole.

答案

tostep5.Itwasveryfoolishofyou

(park)thecarinfrontofthesupermarket.

答案

topark4.Itwasnecessary(step)SectionB

LearningAboutLanguageSectionBLearningAboutLanguⅠ.知識(shí)體系圖解

重點(diǎn)詞匯1.surgeonn.

→surgeryn.

2.shavevt.&n.

3.beardn.

4.cigaretten.

5.drugn.

6.

vt.&vi.組成;作曲;撰寫

7.

n.解放;擺脫

8.

vt.打擾;攪亂;使煩惱

9.

n.專科醫(yī)生;專家

10.

n.顧問(wèn);高級(jí)顧問(wèn)醫(yī)師

11.

vt.跳過(guò);不參加;悄悄溜走vi.蹦蹦跳跳地走;跳繩n.蹦跳

外科醫(yī)生

外科手術(shù);外科學(xué)

剃(須發(fā));刮臉

胡須;絡(luò)腮胡子

香煙;卷煙毒品;藥物

compose

liberation

disturb

specialistconsultant

skipⅠ.知識(shí)體系圖解重點(diǎn)詞匯1.surgeonn.重點(diǎn)短語(yǔ)1.

下定決心

2.

由……組成(或構(gòu)成)的

3.

剃掉;刮去

4.

采取行動(dòng)

5.

找借口

6.

簡(jiǎn)單說(shuō)

7.beginwith

8.beincontrolof

9.loseweight

10.cutout

11.takeup

12.stickto

makeupone’smind

becomposedofshaveoff

takeaction

makeexcuses

simplyspeaking

以……開始

控制

減肥

剪去;刪除占用堅(jiān)持

重點(diǎn)短語(yǔ)1.重點(diǎn)句式

Neithertoomuchnortoolittleisgood.重點(diǎn)語(yǔ)法

動(dòng)詞不定式作主語(yǔ)

重點(diǎn)句式NeithertoomuchnortooⅡ.釋義匹配1.surgeon

A.whensomethingorsomeoneisfreed2.liberation B.tonotdosomethingthatyouusuallydoorshoulddo3.disturb C.adoctorwhoisspeciallytrainedtoperformmedicaloperations4.skip D.hairthatsomemenallowtogrowonthelowerpartoftheirfaces5.beard E.tointerruptsomeonesothattheycannotcontinuewhattheyaredoing答案

1.C

2.A

3.E

4.B

5.DⅡ.釋義匹配Ⅲ.介(副)詞填空1.Liftingheavyweightscanlead

ariseinbloodpressure.

2.Youcanfind

whethertheyarepreparedtosharethecostwithyou.

3.Herefusedtogive

inspiteofmanydiscouragementsinhiscareer.

4.Asparents,wehavearesponsibilitytogiveourchildrenasense

belonging.

5.Youarefullyincontrol

yourownhabits,yourownbody,andyourownlife.

to

outupofofⅢ.介(副)詞填空tooutupofof1.Weneedtomake

up

our

mindsandshowsomediscipline,andmakesmallchangesovertime.我們需要下定決心,遵守紀(jì)律,并隨著時(shí)間的推移做出一些小小的改變?！驹~匯精講】

makeupone’smind下定決心

I’vemade

up

my

mindtogotocollegeafterIfinishmiddleschool.我決定中學(xué)畢業(yè)后去上大學(xué)。Theymade

up

their

mindstoliveamodernlife.他們下定決心要過(guò)現(xiàn)代的生活。Oncewehave

made

up

our

mindstocheerup,itistimetotakeaction.一旦我們決定振作起來(lái),就是時(shí)候采取行動(dòng)了。【溫馨提示】使用make

up

one’s

mind短語(yǔ)時(shí)需要注意,mind的單復(fù)數(shù)要根據(jù)主語(yǔ)的單復(fù)數(shù)來(lái)變化。重點(diǎn)詞匯

1.Weneedtomakeupourminds【詞匯拓展】

Hepromisedtokeepmywishesin

mind.他承諾要記住我的愿望?！驹~匯拓展】Hepromisedtokeepmy2021英語(yǔ)人教版選擇性必修第三冊(cè)課件UNIT-2-Section-B-2021英語(yǔ)人教版選擇性必修第三冊(cè)課件UNIT-2-Section-B-2.Simply

speaking,ahealthylifestyleisaboutfindingtherightbalanceandmakinggoodchoices.簡(jiǎn)單地說(shuō),健康的生活方式就是找到恰當(dāng)?shù)钠胶?做出好的選擇?！驹~匯精講】

simplyspeaking簡(jiǎn)單地說(shuō)Simply

speaking,ifonewordcarriesatleasttwomeanings,itcanbecalledapolysemousword.簡(jiǎn)單地說(shuō),如果一個(gè)單詞有兩種以上的意義,那么就可稱之為多義詞。Simply

speaking,weknowwhatyourneedsare!簡(jiǎn)單來(lái)說(shuō),我們最清楚明白您的需要!2.Simplyspeaking,ahealthyli【詞匯拓展】

Generally

speaking,peopleliketohearcomplimentsfromothers.總的來(lái)說(shuō),人們都喜歡聽到別人的稱贊。Frankly

speaking,it’snoteasytobeascientist.坦白地說(shuō),成為科學(xué)家不是一件容易的事情?！驹~匯拓展】Generallyspeaking,peop2021英語(yǔ)人教版選擇性必修第三冊(cè)課件UNIT-2-Section-B-2021英語(yǔ)人教版選擇性必修第三冊(cè)課件UNIT-2-Section-B-3.Lifeiscomposedofmanyelements,suchasfamily,friends,study,work,entertainmentandsoon.生活是由家庭、朋友、學(xué)習(xí)、工作、娛樂(lè)等多種元素組成的?！驹~匯精講】

composevt.&vi.組成;作曲;撰寫Tenmencomposethecommittee.委員會(huì)由十人組成。Vivaldicomposedalargenumberofveryfineconcertos.維瓦爾蒂創(chuàng)作了大量非常優(yōu)美的協(xié)奏曲。Themanageraskedthesecretarytocomposeareport.經(jīng)理要求秘書寫一個(gè)報(bào)告。3.Lifeiscomposedofmanyele【詞匯拓展】

Everysubstance,nomatterwhatitis,is

composed

ofverysmallparticlescalledmolecules.每種物質(zhì),不論它是什么,都是由一些被稱為分子的很小的粒子構(gòu)成的。Theirdietconsistslargelyofvegetables.他們的日常飲食以蔬菜為主。【詞匯拓展】Everysubstance,nomatt2021英語(yǔ)人教版選擇性必修第三冊(cè)課件UNIT-2-Section-B-2021英語(yǔ)人教版選擇性必修第三冊(cè)課件UNIT-2-Section-B-2021英語(yǔ)人教版選擇性必修第三冊(cè)課件UNIT-2-Section-B-4.TojointhePeople’sLiberationArmy,itisrequiredformentoshaveofftheirbeards.要加入中國(guó)人民解放軍,男人必須剃掉胡須。【詞匯精講】

shavevi.,vt.&n.剃(須發(fā));刮臉MrBrowntookabathandshavedbeforedinner.布朗先生在晚餐前洗了澡并刮了臉。Hehadshavedhisfaceuntilitwassmooth.他把臉刮到光滑為止。Heneverseemedtoneedashave.他似乎從不需要刮臉。4.TojointhePeople’sLiberat【詞匯拓展】shaveoff剃掉;刮去I’vedecidedtoshave

offmybeard.我決定刮胡子。【詞匯拓展】2021英語(yǔ)人教版選擇性必修第三冊(cè)課件UNIT-2-Section-B-5.Itwasnotpolitetodisturbyourneighbourswithloudmusiclastnight.昨晚,用很響的音樂(lè)打擾你的鄰居是不禮貌的?！驹~匯精講】

disturbvt.打擾;攪亂;使煩惱Idreamabouthim,dreamssovividthattheydisturbmefordays.我夢(mèng)到他了,夢(mèng)是那么栩栩如生以至于困擾了我好幾天。Didyousleepwell?Ididn’twanttodisturbyou.Youlookedsopeaceful.你睡得好嗎?我不想打擾你。你看起來(lái)如此平靜。Themanagerwillbeangryifyoudisturbhimwhenhe’sinconference.經(jīng)理開會(huì)時(shí)如果你打擾他,他會(huì)生氣的。5.Itwasnotpolitetodisturb【詞匯拓展】

ThencamethedisturbingnewsthatDollyhadbecomeseriouslyill.接著傳來(lái)了多莉病重的令人不安的消息。Thenewsreallymademedisturbed.這個(gè)消息的確令我不安?！驹~匯拓展】Thencamethedisturbin2021英語(yǔ)人教版選擇性必修第三冊(cè)課件UNIT-2-Section-B-重點(diǎn)句式Neither

too

much

nor

too

little

is

good.不多不少正合適?！揪涫狡饰觥縩either...nor...“既不……也不……”。其含義是否定的,可連接任意兩個(gè)并列的成分。ProfessorHisamatsuspokeneitherEnglishnorGerman.久松教授既不會(huì)講英語(yǔ),也不會(huì)講德語(yǔ)。Icangiveyouneitheranopinionnoranyadvice.我既不能給你意見,也不能提供任何建議。Thecomposerneitherworriednorcaredaboutpublicopinion.這位作曲家對(duì)輿論既不擔(dān)心,也不在意。重點(diǎn)句式【句式拓展】(1)neither...nor連接兩個(gè)名詞或代詞作主語(yǔ)時(shí),謂語(yǔ)動(dòng)詞要遵循“就近一致”原則。Neitherthestudentsnortheteacherknowsanythingaboutit.同學(xué)們和老師都對(duì)此一無(wú)所知。(2)遵循“就近一致原則”的其他并列連詞:【句式拓展】(1)neither...nor連接兩個(gè)名詞或代2021英語(yǔ)人教版選擇性必修第三冊(cè)課件UNIT-2-Section-B-重點(diǎn)語(yǔ)法動(dòng)詞不定式作主語(yǔ)1.不定式(短語(yǔ))作主語(yǔ)時(shí),往往由it代替它作形式主語(yǔ),不定式則移至謂語(yǔ)之后。常見的句型有:(1)Itis+名詞+todo...Webelieveitisourdutytohelpthoseinneedtomaketheworldweliveinabetterplace.我們相信我們有義務(wù)幫助那些有困難的人來(lái)創(chuàng)造一個(gè)更美好的世界。Itisanhonourformetobeinvitedtospeakatthemeeting.被邀請(qǐng)?jiān)跁?huì)上講話我感到非常榮幸。重點(diǎn)語(yǔ)法(2)Ittakessbsometime+todoIttakesthemseveraldaystoadaptthemselvestotheclimateattheheights.他們花了數(shù)天的時(shí)間才適應(yīng)高地的氣候。Ittookusawholeweektogothroughtheforest.我們花了整整一星期才穿過(guò)那片森林。(3)Itiseasy/difficult/hard/necessary(forsb)todoHoweverhardyoutry,itisdifficulttoloseweightwithoutcuttingdowntheamountyoueat.不管你多么努力,很難在不減少食物攝入量的情況下減肥。Ithinkthatitisimpossibletobetherebeforeeight.我覺得在8點(diǎn)之前趕到那里是不可能的。(2)Ittakessbsometime+to(4)Itisclever/wise/good/careless/honest/kindofsbtodo...Itwasreallyverykindofyoutogivemealifthome.你能送我回家真是太好了。Itisfoolishofthemtoturndowntheproposal.他們拒絕那個(gè)建議實(shí)在是太愚蠢了。(4)Itisclever/wise/good/care2.不定式作主語(yǔ)位于句首,常出現(xiàn)于正式文體中。Tochangebadhabitsisnevereasy,evenwithmanyattempts.改變壞習(xí)慣絕不容易,即使經(jīng)過(guò)很多嘗試。Tohelpothersgivesapersonsatisfaction.幫助他人給人以滿足感。Toswiminthisriverisdangerous.在這條河里游泳很危險(xiǎn)。Todothisistocutthefoottofittheshoe.這樣做是削足適履。2.不定式作主語(yǔ)位于句首,常出現(xiàn)于正式文體中。【拓展】動(dòng)詞不定式可與疑問(wèn)詞when,where,how,what,which,who等組合,構(gòu)成不定式短語(yǔ),在句中可作主語(yǔ)、表語(yǔ)或賓語(yǔ)等成分。1.作主語(yǔ)Whentostarthasnotbeendecided.尚未決定何時(shí)動(dòng)身。Whattoreadisanimportantquestion.該讀些什么是一個(gè)很重要的問(wèn)題。Howtobeginismoredifficultthanwheretostop.如何開始比到哪里停止還困難?！就卣埂縿?dòng)詞不定式可與疑問(wèn)詞when,where,how,w2.作表語(yǔ)

Thequestioniswhattodonext.問(wèn)題