Grammar:it的常見用法UNIT4Naturaldisasters通過本節語法課，你將會：1.掌握it作代詞的基本用法2.學會it作形式主語的常見句型3.了解it作形式賓語的基本句型QUESTIONS：What’stheweatherliketoday?What’sthetimenow?Whatisthedatetoday?Whatistheseasonnow?Howfarisyourhomefromschool?Answerthesequestionsbelow.Leadin在你的回答中，it分別指代什么？It是一個特殊的代詞，它有兩重意義。單詞意義用法例子it1.代詞2.形式主語/形式賓語指代事物，前面提到過的事表示時間,天氣，季節等。出現在固定句型（背誦）Yourdressisbeautiful.Ilikeit.ItisThursday.Itis12o'clock.Itisboringformetostayathome.ItiskindofyoutohelpmewithmyEnglish.Ifindithardtofinishhomework.1.it作代詞的基本用法it作代詞的用法——Themascot(吉祥物)isalovelyandcutepanda!1.it指代事物或前面提到過的事物:Yeah.Iloveitsomuch!——mascot(吉祥物)2.it指代時間和天氣Itisfreezingcold.HowistheweathertodayinSZ?Whattimeisitnow?Itis___?___o'clocknow.YourschoolYourhomeHowfarisit

fromyourschooltoyourhome?Itisonlyfiveminutes’walk.3.it指代距離Howfar?4.it表示情況,或指代this,that:What’sthis?It

isaBingDwenDwen.4.不清楚對方性別時，可用it指代對方Isitaboyoragirl?5.it用于某些句型It'stimeforsth.該做某事了。It'stimetodosth.該做某事的時候了It'stimeforsb.todosth.某人該干某事了。It'sfirst(second)time+that從句某人第幾次干某事。(從句謂語用現在完成時)It's+時間段+since從句自從....有一段時間了。it位于句首1.now/forsupper/it/time/is__________________________________________2.autumn/inAustralia/now/it/is__________________________________________3.aboutfivekilometres/it/is/tothepark__________________________________________4.windy/was/it/

yesterday__________________________________________Putthewordsinthecorrectordertomakemeaningfulsentences.Itistimeforsuppernow.ItisautumninAustralianow.Itisaboutfivekilometrestothepark.Itwaswindyyesterday.2.it作形式主語英語中不定式、動名詞、主語從句在作主語時主語往往顯得很長，使整個句子看上去有點頭重腳輕。這樣就借助“it”來作形式上的主語，而把真正的主語移到句子后邊去，使全句看上去平穩一些。“it”沒有實際的意義，但不可以省略。it作形式主語

句型1.It+be+forsb.+todosth.做某事對于某人來說怎么樣

形容詞必須是表示事情的形容詞。如：important,easy,necessary,difficult

上網課對大衛來說很簡單。

It’seasyforDavidtostudyonline.句型2.It+be+ofsb.+todosth.某人做某事某人怎么樣

形容詞必須是能表示人的形容詞。如：nice，kind,brave,clever,foolish

你肯幫我,你人太好了。

It’skindofyoutohelpme.=Youarekindtohelpme.it作形式主語的常見句型句型3.It+be+

名詞短語+todo做某事是....Itisourdutytoprotecttheenvironment.保護環境是我們的責任。ItisourresponsibilitytoprotecttheEarth.保護地球是我們的責任。Itisimportanttostaycalmwhenthereisafire.Itisdangeroustostartafireintheforest.

【練習】Putthewordsinthecorrectordertomakemeaningfulsentences.Itisagoodideatotakeanumbrella.Itisnicetohaveapicnicinthepark.

【練習】Putthewordsinthecorrectordertomakemeaningfulsentences.Itseemsthatatyphooniscoming.Itappearsthattheflighthasbeencancelled.Itseemsthatsomethingbadhashappenedtoher.句型4.It+seems/appearsthat好像......

Itseemsthathedidn'ttellthetruth他好像沒有說出真相。it作形式主語的常見句型

【練習】Putthewordsinthecorrectordertomakemeaningfulsentences.it作形式主語的常見句型句型5.It+be+nouse/nogood+動名詞（v-ing）做某事是沒用的【翻譯】覆水難收._____________________________________句型6.It+be+done(reported/said/told/known…)+that據報道、據說、據獲悉........

據說他已經出國學習了。

Itissaidthathehasstudiedabroad.

【填空】大家都知道這座大橋要提前完工。

Itis_____________thatthebridgewillbecompletedaheadoftime.Itisnousecryingoverthespiltmilkknown3.it作形式賓語這種情況通常只用于能帶以名詞或形容詞作賓語補語的動詞后面。【常用句型】feel/think/find+________+adj.+todo…我覺得/認為/發現做某事是怎樣的【例句】IfounditnoteasytogetalongwellwithJim.我發現和吉姆相處好不簡單。【填空】我認為學好英語很重要。Weallthink_________________tolearnEnglishwell.it作形式賓語itit出現在句中，在動詞后importantitIt的常見用法用法例句1用作人稱代詞代替前面提到過的事物Thebookisnotmine.It’sMary’s.2用來代替指示代詞 —What’sthis?—It’sadictionary.3指時間、季節、天氣、氣候It’sspringnow.It’swarm.4指距離Itisalongwaytothehospital.5作形式主語Itisdifficulttofinishtheworkintwodays.Itisapitythatyoudidn’tpassthetest.6作形式賓語IfounditinterestingtostudyEnglish.Sumup!it的常見句型句型例句Itis+adj./n.+(forsb.)todosth. Itisnecessaryforustodosomereadingeveryday.Itisaruletoarriveattheofficeontime.Itis+adj.+ofsb.todosth.Itishonestofyoutotellthetruth.Itisa+n.+that...Itisapitythatyoudidn’tcometotheparty.Itseems/appearsthat...Itseemsthatwehavetofindanotherway.Itissaid/reported/believedthat...ItissaidthatMr.SmithisfromAustralia.Itistimeforsth.Itistimeforsb.todosth.It’stimeforclass.It’stimeforustogohome.Ittakes/willtake/took(sb.)+時間段+todosth.Ittookhimtwohourstofinishthereport.It’sone’sturntodosth.It’syourturntocleantheclassroom.一．選擇填空()1.Haveyouseenmywatch?Yes,______isonthedesk.A.It B.this C.it D.that()2.---IheartheWhiteshaveanewbaby.---Oh,is________lovely?A.he B.she C.they D.it()3.---Thereisaknockatthedoor._______?---Itisme.A.Whoishe B.WhoisthatC.Whoisit D.WhoissheCCD一．選擇填空()4.Whatistheweatherliketoday?________isveryhot,isn’tit?A.it B.It C.Weather D.It’s()5.Howfaris_______fromheretotherailwaystation?_______abouttenminutes’walk.A.it;It B.it;It’sC.It;ItD.it;Its()6.Isthatapenorapencil?_______isapencil.A.This B.That C.It D.TheyBBC()7.Whatisthedatetoday,the18thorthe19th?Neither.________the20th.A.ItB.That C.Th