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1、Unit6AcharitywalkdodonategivehelpjoinkeepmeaningfultheTree-plantingClubItismeaningfultojointheTree-plantingClub.importantparkscleanItisimportanttokeepparksclean.dodonategivehelpjoinkeepdodonategivehelpjoinkeepeasyseatstheelderlyItiseasytogiveseatstothee
2、lderly.dodonategivehelpjoinkeephelpfulmoneytocharitiesItishelpfultodonatemoneytocharities.dodonategivehelpjoinkeepfunvoluntaryworkItisfuntodovoluntarywork.dodonategivehelpjoinkeepgoodblindpeoplecrosstheroadItisgoodtohelpblindpeoplecrosstheroad.Itis＋adj.
3、＋that从句此句型中it是形式主语，真正的主语是that引导的从句。用于此句型的常见形容词有：possible，strange，natural，necessary，important，likely，fortunate，obvious等。如：Itisstrangethatnobodyknowswherehehasgone.很奇怪没有人知道他去了哪儿。Itispossiblethatoneofthemkeepsakindofbankwheretheworkerscankeeptheirmoneysafe
4、.很可能他们中有一个人掌管着一种“银行”，工人们可以把钱安全地存放在那儿。Itis/was+形容词+（for/ofsb）+动词不定式短语对于这个句型中究竟是用for还是用of,一般遵循这样的规则：如果形容词仅仅是描述事物的形容词，如：difficult,easy,hard,important,dangerous,等用for;如果形容词是描述不定式行为者的性格、品质的，如：kind,good,clever等则用of。如：Itisinterestingtoplaywithsnowinwinter.冬季里玩
5、雪是很有趣的。Itisimportantforustokeepthewaterclean.保持水质清洁对我们来说是很重要的。Itisverykindofyoutosayso.你这样说真是太好了。it还可代替todo和that从句作形式宾语Find/make/thinkit+adj.+todosth.Find/make/thinkit+adj.+that从句Itis+adj.+动词不定式该句型结构中,it为形式主语,真正主语为其后的动词不定式.例如:Itiswisetotakeamapandamobil
6、ephone.Itismeaningfultoraisemoneytohelppeopleinneed.该句型中也适合于动词take的句型.1.What’sthepriceofthepen?__________isthepen?2.IfindithardthatIcangetalongwellwithallmyclassmates.Ifind_______togetalongwellwithallmyclassmates.答案：1.Howmuch2.ithard3.Tomisreadyforthepa
7、rty,?A.isheB.isn’tTomC.isn’theD.isTom4.haveyoubeenswimming?--Twohours.A.WhenB.WhereC.HowlongD.Howmany答案：3.C4.C5.Ifit_____tomorrow,we__________gotothepark.()A.rains,won’tB.willrain,won’tC.rains,don’tD.rains,don’tgo答案：5.A6.Howabout_________ascarf?()A.buyB
8、.buyingC.boughtD.tobuyWhy_______gotothepark?()A.notB.don’tC.doD.didn’t答案：6.BA7.—Wouldyoumind______thewindow?It’stoocoldhere.—OK.I’lldoitrightaway.()A.toopenB.openingC.closingD.toclose答案：7.C8.Therewillbe______waterand______treesin
