英语：it的精华用法课件ppt

Whatisittolove?•Goodshepherd,tellthisyouthwhatitistolove.•Itistobeallmadeofsighsandtears;•Itistobeallmadeoffaithandservices;•Itistobeallmadeoffantasy;•Allmadeofpassion,andallmadeofwishes…——WilliamShakespeare什么是爱情？•主啊，请告诉我什么是爱？•爱是唏嘘和眼泪；•爱是忠贞不渝和殷勤对待；•爱是绚丽的梦幻；•爱是激情，是期待…——威廉·莎士比亚Whatisittolove?•Goodshepherd,tellthisyouthwhatitistolove.•Itistobeallmadeofsighsandtears;•Itistobeallmadeoffaithandservices;•Itistobeallmadeoffantasy;•Allmadeofpassion,andallmadeofwishes…——WilliamShakespeareI.it有哪些基本用法呢？Itcanreferto…•指时间:•Itwasnearlymidnightwhenshecameback.•指环境:•Itwasveryquietinthecafé.•指距离：•Itishalfanhour’swalktothecitycentre.•指天气：•Itisverycoldinwinter.•指性别不明的孩子或身份不明的人：•——Whoisthebaby?——It’sprofessorLee’sdaughter.•指代前面提到过的事物•Thatvaseisvaluable.It’smorethan200yearsold.•指代to不定式，作形式主语•Itisdifficulttogetupearly.•指代to不定式，作形式宾语•TheyfinditdifficulttolearnEnglishwell.1.Shereceivedabirthdaygiftbutshedidn’tlike_____.2.Thispenisbeautiful;Ihave___likethis.3.TheweatherinBeijingiscolderthan___inGanzhou.4.Mychildrenhaveno____toplaywith.易误辨析:it/one/thatitonethatIt指代前面提到的事物同类中的另一个That也指同类中的另一个，但后面有限定词（in/of短语）oneit可用来指代前文提到的人,物或事情,也可以用来指时间,金钱,距离,天气等自然现象基本用法:•Itiseasyforustoclimbthehill.•Itisbraveofhertogohomealoneatnight.II.形式主语1Itis/was+adj.(possible,necessary,important…)+(for/ofsb.)todosth.句型意思：对某人来说做某事是…的Translatetheproverbs•It’seasytoopenashopbuthardtokeepitalwaysopen.•创业容易守业难。•It’snevertoolatetolearn.•活到老，学到老。•Itisnousecryingoverthespiltmilk.nogood/useItisdoingsth.awasteoftimeworthfun句型意思:做某事是没有用的/浪费时间/值得的/有趣练一练：跟他说这个是浪费时间的。It’sawasteoftimetellingittohim.II.形式主语2以下句子对不对？•Itisnousetoarguewithhim.•Itisgreatfunworkingwithher.•Itisclearthatsheisthebeststudentintheclass.•Itisevidentthatsuccessliesinhardwork.Itisclear(obvious,true,certain)that.....句型意思:清楚（显然，真的，肯定）的是…练一练：明显Vivian已经回来了。It’sclearthatVivianhascomeback.II.形式主语3•Itisimportantthathe(should)besenthereatonce.•Itisapitythatsuchathing(should)happeninyourclass.Itisimportant(impossible,necessary)that主语(should)doItisapity/ashame(strange,surprising)that主语(should)do句型意思:重要（不可能，必要）的是，应该…遗憾（奇怪，吃惊）的是，竟然…II.形式主语4•Itissaidthathehasbeenmarried.•Itisreportedthattheroadwasclosed.Itissaid(reported，believed....)that...句型意思:据说（据报道，人们相信）…练一练：人们相信有志者，事竟成。Itisbelievedthatwherethereisawill,thereisaway.II.形式主语5…possibleItis/was+adj.necessary+(forsb.)todosth./that-clauseimportant……apityIt+is/was+n.afact+that-clausenowonder……saidItis/wasp.p.known+that-clausebelieved…形式主语(总结)巩固提高•没有大量的记忆是不可能学好英语的。_______________________________withoutmuchmemorywork.•——Heisadiligentstudent.——___________________(难怪)heisalwaysthetoponeinhisclass.•给他建议是没用的。___________________________ItisimpossibletolearnEnglishwellItisnowonderthatItisnousegivinghimadvice.•这项工程有必要完美竣工。__________________theprojectshouldbeperfectlycompleted.•_______________(据报道)theearthquakehascausedalotofdamage.•_______________(人们相信)thesechildrenwillachievetheirdreamseventually.•___occursto/hits/strikesmethat(我突然想到)weshouldsetoffimmediately.ItisnecessarythatItisreportedthatItisbelievedthatItIII.形式宾语1findeasyfeelpossible1.S+think+it+(adj.)necessary+(forsb.)todosth./clauseconsiderimportantbelieveclearmake……意思：发现做某事（对某人来说）是...的•IfinditeasytogetonwithJim.•Imadeitclearthatnobodyisallowedtosmokehere.句型Ithinkithisdutytocleantheblackboard.句型……findarule2.S+think+it+(n.)one’sduty+(forsb.)todosth./clausefeelanhonor……意思：发现做某事（对某人来说）是…III.形式宾语2Theyfinditnousesayingmoreaboutit.句型意思：认为某事是没用的…3.S+think+it+nogood+doingsth.nouseIII.形式宾语3Ihate___whenpeopletalkwiththeirmonthsfull.点拨:这是it作形式宾语的一种特殊用法.少数动词(如like,love,enjoy,dislike,hate,appreciate等)或包含介词的动词短语(如seeto,depend/relyon等)后接宾语从句,必须先由it担任形式宾语,再接从句.1.Ilike(enjoy,hate…)itwhen2.Iwouldappreciateitif…3.…seeto(dependon…)itthatSentencepatterns:itIII.形式宾语4表示“喜欢/讨厌”的词确保，相信……findpossible1.S+think+it+necessary+(forsb.)todosth./clausefeelimportant……Sentencepatterns形式宾语(总结)…arule2.S+V+it+one’sduty+(forsb.)todosth./clauseanhonor…3.S+V+it+nogood+doingsth.nouse•他认为说服他们没用。He______________persuadingthem.•如果我们邀请他，他将非常感激。______________________weinvitehim.•Shehates___________hesaidthathewasthemostimportant.founditnouseHewillappreciateitthatitwhenIV.it的一些固定用法常见的固定用法有:makeit成功，安排在或定在某时间forgetit别提了，忘了它吧Don’tmentionit别提了，表示不用谢Itdoesn’tmatter没关系It(That)depends视情况而定Youguessedit你猜着了It’shardtosay很难说It’suptoyoutodosth.由你来决定做某事V.复习总结①Someyoungpeoplethinkitattractivewhentheysmoke.②Butitisbelievedthatsmokingcausescancer.③Soitiscertainthatyoucouldsufferfrombadhealthifyoukeepsmoking.④However,itisdifficulttogiveupsmoking.⑤It’sworthwhiletryingtoquitsmokingwithdetermination.⑥Youwillfinditgreattoaccustomyourselftolivingwithoutcigarettes.Thankyouforlistening!