It+系动词(be，seem….)+adj/n+(forsb)+todosth.

　　It’simportantforustohaveagoodknowledgeofEnglish.

　　It’sourdutytohelpothers.

　　It’sapleasure(forus)togopicnickinginsuchpleasantweather.

　　It’snormalfortheprofessionalworkersthesedaystoprefertoliveinthecountryside.

　　It’sapityfortheretobeanydisagreementinthefamily.

　　It+系动词(be，seem….)+adj/n+(ofsb)+todosth.(adj.表示了人物的品质特征)

　　Itishonestofhimtoreturnallthemoneytotheloser.

　　Howrudeofhimtotreatachildlikethat！=It’srudeofhimtotreatachildlikethat.

　　37.不定式作宾语，it作形式宾语

　　主语+think/believe/feel/make+it+adj/n+of/forsb+todo

　　Ibelieveitquitepossiblefortheenemytotakeusbysurprisetonight.

　　Ithinkitgoodmannerstosayhellotoyourteacherswheneveryoumeetthem.

　　Ifeelitgreedyofhimtotakepossessionofhisparents’house.

　　Thedevelopmentofsciencehasmadeitquiteconvenientforustogetintouchwithothers.

　　Thegoodatmosphereofstudyhasmadeitpossibleforustostudywell.

　　38.have+n=do让某人去干….(一次性动作)

　　have+n+doing让……持续(反复进行)

　　have+n+done请人干……/使遭受到…../使某事完成

　　hehadhisstudentstranslatingsentencesallthetimeinclass.

　　I’llhavethereporttypedbythesecretary.

　　Yesterdayonthebushehadhismoneystolen.

　　Don’tbeworried，I’llseetothematterandhaveeverythingpreparedwellinadvance.

　　39.won’t/can’thave+n+doing/done不能容忍某行为发生

　　It’srudeofyoutospeaktomotherlikethatandIwon’thaveyouspeakingtoMotherlikethatinfuture.

　　Ican’thaveyousmokinglikethat.

　　Wecan’thaveanythingdoneagainsttheschoolrules.

　　40.get+n+todo让某人去干……(一次性行为)

　　get+n+doing使……开始……/使……动起来

　　get+n+done请人干…../使某事做完

　　theteachergotthestudentoreadthenewstohisclassmates.

　　Theboyisalwayskeepingsilent.Canyougethimtalking？

　　Theworkersareonstrike.Canyougetthemworking？