it用法公開課課件

itDiscussionWhatjobscan“it”do?It用法歸納一、指代it二、形式it三、強調(diào)it四、含有it的短語、諺語

Lookatthepicture._____isapictureofourschool.It一、1.用作人稱代詞,代表前面提到的人或事物.Mypenismissing.Ican’tfind___anywhere.it---Isthisjacketyours?---Yes,______is.2.用于代替指示代詞this和that。it3.用以表示時間、距離、天氣、季節(jié)、環(huán)境等..It’s10:08.It’sonlyhalfanhour’swalkfromheretoourschool.3)Itissunnytoday,isn’tit?4)It’sspringnow.5)It’squiethere.Time

Distance

Weather

Season

Circumstance（環(huán)境）4、可以用來指動物、嬰兒和未確定身份的人。

Whoisit?

It’slovely.Itweighsonly3kilos.二形式it-------

形式主語，形式賓語ItisvitalforallofyoutohaveagoodcommandofEnglish.你們掌握英語是至關重要的。形式主語TohaveagoodcommandofEnglishisvitalforallofyou.1.代替動詞不定式做主語1)Itbeadj.(forsb.)todosth.此處adj.

通常為描述事件的形容詞:easy,difficult,necessary,important,possible,

useful,useless,vital（至關重要的）,essential（必要的）...Makesentences:1.我們保持自然界的平衡是有必要的。Itisnecessaryforustokeepthebalanceofnature.2.在日常生活中練習你的英語口語是非常重要的。It’sveryimportantforyoutopractiseyouroralEnglishindailylife.你讓我們做這些練習是明智的。Itiswiseofyoutoletusdotheseexcises.It's

kindofyoutohelpmework

outtheproblem.2)Itbeadj.ofsb.todosth.此處adj.

通常為描述人的形容詞:kind,,nice,rude,polite,

cruel,considerate（細心的）,thoughtful,careful,careless,foolish,

stupid,clever,wise.你能幫我，真好。It’sverykindofyoutohelpme.It’sveryniceofyoutooffermeaseat.給我讓座，您太好了！Makesentences:

3It+takes、took(sb.)+時間/金錢/精力等+動詞不定式

Ittookmemuchtimetoedit（編輯）thispowerpoint.說實話需要很大的勇氣。Ittakesgreatcouragetotellthetruth.成功需要付出極大的努力。Ittakesgreatefforts/painstosucceed.It’snogood/use/pleasuredoing…做……沒益處，沒用，沒趣

2.代替動名詞做主語Itisnousecryingoverspiltmilk.只閱讀不理解沒什么益處。It

is

no

good

reading

without

understanding

.

Itispossiblethatwewillrealize（實現(xiàn)）ourdreamsoneday.3.代替主語從句作形式主語1)Itisclear(obvious,true,possible,certain…)that...該句型中it是形式主語,真正的主語是that引導的主語從句,常譯為“清楚(顯然,真的……)”,是主語從句最常見的一種結構。Itisadj.+

從句顯然，手機給我們帶來了許多好處。Itisclearthatcellphoneshavebroughtusalotofbenefits.Itisnecessarythatyou(should)rememberthe3500words.

2)Itisimportant

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

that...

that后的從句中要用虛擬語氣（should+動詞原形。

我們用有效的方法學習很重要。Itisimportantthatweshouldlearninaneffectiveway.Itissaidthathehasasecretweaponinmathslearning.Itissaid(reported/believed.....)that...該句型中的it仍是形式主語,真正主語是that引導的主語從句;該結構常譯為“據(jù)說(據(jù)報道,據(jù)悉…)”。②Itisv-edthat…

人們相信健康比財富更重要。Itisbelievedthathealthismoreimportantthanwealth.Itisashamethatourcityhasbeenundertheshadowofsmogthesedays.③Itis+noun+

從句

Itisapity(ashame/anhonor/afact/asurprise/...)that...很遺憾/可恥的是/很榮幸…很遺憾你不能來參加這個派對。Itisapitythatyoucouldn’tcometotheparty.我很榮幸被邀請參加你的生日聚會.ItisanhonorthatIwasinvitedtoyourbirthdayparty.Ithappens

(seem,appears,

turns

out

,

)等不及物動詞+that...

碰巧．．.看來．．．結果證明….

Itseemedthathedidn’ttellthetruth.IthappenedthatIwasoutwhenhecalled.

Itis(high)time

that...

從句應該用虛擬語氣，①常用過去時態(tài)表示虛擬．②有時也用should+動詞原形，should不能省，常譯為＂是（正是）．．．的時侯．．．＂

Itistimethatweshouldworkhard.Itishightimethatweshouldtakeactiontodealwiththeenvironmentalproblems.是我們采取行動解決環(huán)境問題的時候了！形式賓語動詞+it+形容詞/名詞+（forsb）todo/doing+that從句think,believe,

consider,

feel,

make,

find…

harduselessimportantnecessarynatural/essential…no

use/no

good/a

waste

of

time/ourdutyIfounditveryinterestingtostudy

English.形式賓語Ithinkiteveryone’sdutytoprotectourmother–theearth.I

think

it

important

that

you

(should)

makeaplan.

IhavemadeitarulethatIwilldosomeEnglishreadingeveryday.規(guī)定，習慣于我發(fā)現(xiàn)學英語很有趣。我認為保護我們的地球母親是每個人的責任。我認為你制定一個計劃很重要。it作形式賓語的特殊句型結構動詞+it+if/that/when動詞有喜歡類：enjoy,like,appreciate,prefer

討厭類：hate,dislike如果你能給我這個機會我將不勝感激。Iwouldappreciateitifyoucanoffermethechance.Ilikeitwhenmymotherishappy.Ihateitwhenpeopletalkwiththeirmouthsfull.Hetookitforgrantedthathewouldpasstheexam.

Don’tdepend/relyonitthathewillarriveontime.IowedittoTomthatIfoundthejobIwanted.

想當然地認為指望把什么歸功于某人Theymadeavow（誓言）ofloveinfrontofthehugestonein2005.三.強調(diào)句型It+be+被強調(diào)部+that/who(aperson)其他部分Itwasthecouplethat/whomadeavowofloveinfrontofthehugestonein2005.Itwasavowoflovethatthecouplemadeinfrontofthehugestonein2005.Itwasinfrontofthehugestonethattheymadeavowoflovein2005.Itwasin2005that…Itwasfiveo’clock_________Igothome.Itwasatfiveo’clock_______Igothome.whenthatAthatBwhenItwasnotuntilshetookoffherdarkglassesthatIrealizedshewasafamousfilmstar.Itisnotuntil…+that...直到…才請指出下列句子的強調(diào)部分：Itiswhatwethinkthatcontrolsus.四、it常用的固定搭配

makeitsucceed成功、搞定Itwas

hardbutIfinallymadeit.2.takeit

easy不要慌,別擔心。3.Italldepends/thatalldepends.

那要視情況而定。4.It'suptosb.

這取決于你。Itisnevertoolatetolearn.It's

no

use

crying

over

spilt

milk.Striketheironwhileitishot.高考鏈接Thescientists’nextresearchjobwasclear:Findoutwhatinthefish’sbloodkeptitfromfreezing.Theirsearchledtosomereallystrangethingmadeupofaprotein(蛋白質)neverbeforeseeninthebloodofafish.Whenitwasremoved,thebloodfrozeatseawatertemperature.（2008遼寧）70.Whatdoestheunderlinedword“it”inParagraph5referto?

A.Atypeofice-saltmixture.

B.Anewlyfoundprotein.

C.Fishblood.

D.Sugarmolecule(分子）.B閱讀1.Jane

was

walking

round

the

department

store.

She

remembered

how

difficult

_31_

wa