it用法公开课市公开课一等奖省赛课微课金奖课件

it1/43DiscussionWhatjobscan“it”do?2/43It使用方法归纳一、指代it二、形式it三、强调it四、含有it短语、谚语

3/43Lookatthepicture._____isapictureofourschool.It一、1.用作人称代词,代表前面提到人或事物.Mypenismissing.Ican’tfind___anywhere.it4/43---Isthisjacketyours?---Yes,______is.2.用于代替指示代词this和that。it5/433.用以表示时间、距离、天气、季节、环境等..It’s10:08.It’sonlyhalfanhour’swalkfromheretoourschool.3)Itissunnytoday,isn’tit?4)It’sspringnow.5)It’squiethere.Time

Distance

Weather

Season

Circumstance（环境）6/434、能够用来指动物、婴儿和未确定身份人。

Whoisit?

It’slovely.Itweighsonly3kilos.7/43二形式it-------

形式主语，形式宾语8/43ItisvitalforallofyoutohaveagoodcommandofEnglish.你们掌握英语是至关主要。形式主语TohaveagoodcommandofEnglishisvitalforallofyou.9/431.代替动词不定式做主语1)Itbeadj.(forsb.)todosth.此处adj.

通常为描述事件形容词:easy,difficult,necessary,important,possible,

useful,useless,vital（至关主要）,essential（必要）...10/43Makesentences:1.我们保持自然界平衡是有必要。Itisnecessaryforustokeepthebalanceofnature.2.在日常生活中练习你英语口语是非常重要。It’sveryimportantforyoutopractiseyouroralEnglishindailylife.11/43你让我们做这些练习是明智。Itiswiseofyoutoletusdotheseexcises.It's

kindofyoutohelpmework

outtheproblem.12/432)Itbeadj.ofsb.todosth.此处adj.

通常为描述人形容词:kind,,nice,rude,polite,

cruel,considerate（细心）,thoughtful,careful,careless,foolish,

stupid,clever,wise.13/43你能帮我，真好。It’sverykindofyoutohelpme.It’sveryniceofyoutooffermeaseat.给我让座，您太好了！Makesentences:14/43

3It+takes、took(sb.)+时间/金钱/精力等+动词不定式

Ittookmemuchtimetoedit（编辑）thispowerpoint.说实话需要很大勇气。Ittakesgreatcouragetotellthetruth.成功需要付出极大努力。Ittakesgreatefforts/painstosucceed.15/43It’snogood/use/pleasuredoing…做……没益处，没用，没趣

2.代替动名词做主语Itisnousecryingoverspiltmilk.只阅读不了解没什么益处。It

is

no

good

reading

without

understanding

.

16/43Itispossiblethatwewillrealize（实现）ourdreamsoneday.17/433.代替主语从句作形式主语1)Itisclear(obvious,true,possible,certain…)that...该句型中it是形式主语,真正主语是that引导主语从句,常译为“清楚(显然,真……)”,是主语从句最常见一个结构。Itisadj.+

从句显然，手机给我们带来了许多好处。Itisclearthatcellphoneshavebroughtusalotofbenefits.18/43Itisnecessarythatyou(should)rememberthe3500words.

19/432)Itisimportant

(necessary，strange，natural,surprising...)

that...

that后从句中要用虚拟语气（should+动词原形。

我们用有效方法学习很主要。Itisimportantthatweshouldlearninaneffectiveway.20/43Itissaidthathehasasecretweaponinmathslearning.21/43Itissaid(reported/believed.....)that...该句型中it仍是形式主语,真正主语是that引导主语从句;该结构常译为“听说(据报道,据悉…)”。②Itisv-edthat…

人们相信健康比财富更主要。Itisbelievedthathealthismoreimportantthanwealth.22/43Itisashamethatourcityhasbeenundertheshadowofsmogthesedays.23/43③Itis+noun+

从句

Itisapity(ashame/anhonor/afact/asurprise/...)that...很遗憾/可耻是/很荣幸…很遗憾你不能来参加这个派对。Itisapitythatyoucouldn’tcometotheparty.我很荣幸被邀请参加你生日聚会.ItisanhonorthatIwasinvitedtoyourbirthdayparty.24/43Ithappens

(seem,appears,

turns

out

,

)等不及物动词+that...

恰巧．．.看来．．．结果证实….

Itseemedthathedidn’ttellthetruth.IthappenedthatIwasoutwhenhecalled.

25/43Itis(high)time

that...

从句应该用虚拟语气，①惯用过去时态表示虚拟．②有时也用should+动词原形，should不能省，常译为＂是（正是）．．．时侯．．．＂

Itistimethatweshouldworkhard.Itishightimethatweshouldtakeactiontodealwiththeenvironmentalproblems.是我们采取行动处理环境问题时候了！26/43形式宾语动词+it+形容词/名词+（forsb）todo/doing+that从句think,believe,

consider,

feel,

make,

find…

harduselessimportantnecessarynatural/essential…no

use/no

good/a

waste

of

time/ourduty27/43Ifounditveryinterestingtostudy

English.形式宾语Ithinkiteveryone’sdutytoprotectourmother–theearth.I

think

it

important

that

you

(should)

makeaplan.

IhavemadeitarulethatIwilldosomeEnglishreadingeveryday.要求，习惯于我发觉学英语很有趣。我认为保护我们地球母亲是每个人责任。我认为你制订一个计划很主要。28/43it作形式宾语特殊句型结构动词+it+if/that/when动词有喜欢类：enjoy,like,appreciate,prefer

讨厌类：hate,dislike假如你能给我这个机会我将不胜感激。Iwouldappreciateitifyoucanoffermethechance.Ilikeitwhenmymotherishappy.Ihateitwhenpeopletalkwiththeirmouthsfull.29/43Hetookitforgrantedthathewouldpasstheexam.

Don’tdepend/relyonitthathewillarriveontime.IowedittoTomthatIfoundthejobIwanted.

想当然地认为指望把什么归功于某人30/43Theymadeavow（誓言）ofloveinfrontofthehugestonein.三.强调句型31/43It+be+被强调部+that/who(aperson)其它部分Itwasthecouplethat/whomadeavowofloveinfrontofthehugestonein.Itwasavowoflovethatthecouplemadeinfrontofthehugestonein.Itwasinfrontofthehugestonethattheymadeavowoflovein.Itwasinthat…32/43Itwasfiveo’clock_________Igothome.Itwasatfiveo’clock_______Igothome.whenthatAthatBwhen33/43ItwasnotuntilshetookoffherdarkglassesthatIrealizedshewasafamousfilmstar.Itisnotuntil…+that...直到…才请指出以下句子强调部分：Itiswhatwethinkthatcontrolsus.34/43四、it惯用固定搭配

makeitsucceed成功、搞定Itwas

hardbutIfinallymadeit.2.takeit

easy不要慌,别担心。3.Italldepends/thatalldepends.

那要视情况而定。4.It'suptosb.

这取决于你。35/43Itisnevertoolatetolearn.It's

no

use

crying

over

spilt

milk.Striketheironwhileitishot.36/43高考链接37/43Thescientists’nextresearchjobwasclear:Findoutwhatinthefish’sbloodkeptitfromfreezing.Theirsearchledtosomereallystrangethingmadeupofaprotein(蛋白质)neverbeforeseeninthebloodofafish.Whenitwasremoved,thebloodfrozeatseawatertemperature.（辽宁）70.Whatdoestheunderlinedword“it”inParagraph5referto?

A.Atypeofice-saltmixture.

B.Anewlyfoundprotein.

C.Fishblood.

D.Sugarmolecule(分子）.B阅读38/431.Jane

was

walking

round

the

department

store.

She

remembered

how

difficult

_31_

was