it,代词的用法

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1、It做形式宾语和形式主语，用于代替动词不定式和从句1.find/think/consider/feel/make+it+adj./n.+todothatclause…我发现与朋友旅游非常有趣。Ihavefounditfuntotravelwithmyfriends.他非常清楚地表示他想去上海读书深造。Hehasmadeitclearthathewillgoonhisfurtherstudyinshanghai.It做形式宾语和形式主语，用于代替动词不定式和从句Itis +adj.＋of + sb. +to do=主语+ be +形容词＋to do.Itis +adj./n＋for

2、+ sb. +to do=主语+ be +形容词＋to do.Itwassillyofyoutobelievehim.Youweresillytobelievehim.Itisamustforyoutolistentoyourteacherattentively.Youareamusttolistentoyourteacherattentively.It在句型中的特殊用法1.like,love,enjoy,appreciate,hate,dislike+it+when/if引导的从句2.seetoitthat…,dependonitthat,oweittosb.that,take

3、itforgrantedthat,想当然不喜欢你迟到。Idon’tlikeitifyouarelate.你放心我们绝不会灰心。Youcandependonitthatweshallneverloseheart.makeit及时赶到;成功;办成如果你赶快,还可以及时赶到。Youcanmakeitifyouhurry.你不必担心,他会办到的。Youneedn’tworry;hewillmakeit.我明白了。Igotit.It在句型中的特殊用法It在句型中的特殊用法Itis+时间+since+主语＋did（非延动词）我到纽约已经五个月了。ItisfivemonthssinceIarr

4、ivedinNewYork.It’s 10 years sincemyfathersmoked.我爸爸戒烟已有10年了。stoppedsmokingquittedsmoking若since从句中的谓语动词是终止性动词，表示“自某人做某事以来已经多久了”；若从句中的谓语动词是延续性动词，则表示“自某人不做某事以来已经多久了”。-Whatwasthepartylike？-Wonderful！It'sbeenyears____Ienjoyedmyselfsomuch．A.afterB.whenC.beforeD.since我们没有见面已有10年。Itis10yearssincewela

5、stmet.Itwas+时间段+sincesb.haddonesth.自我们离开家乡已经10年了.Itis10yearssinceweleftourhometown.1.Thatwasreallyasplendidevening.It’syears______Ienjoyedmyselfsomuch.(2005.全国I卷.29)A.whenB.thatC.beforeD.since2.Itis+时间段名词+before...若为主句为肯定句，意指“过了多久才…”，若为主句为否定句，则是指“没过多久就…”13小时以后他才会从上海到伦敦。Itwillbe13hoursbeforehe

6、arrivesinLondonfromShanghai.没多久他们就意识到他们错了。Itwasnotlongbeforetheyrealizedthattheywerewrong.1.Scientistssayitmaybefiveorsixyears____itispossibletotestthismedicineonhumanpatients.A.sinceB.afterC.beforeD.when2.Itwassometime_____werealizedthetruth.A.whenB.untilC.sinceD.before3.—Howlongdoyouthinkit

7、willbe___Chinasendsamannedspaceshiptothemoon?—Perhapstwoorthreeyears.A.whenB.untilC.thatD.before3.Itis/was+时间名词+when/that…Itwas8o’clockhecameback.Itwasat8o’clockhecameback.whenthat4.Itis/was+地点名词+where/that…ItistheplaceIwasborn.Itwasintheplac