1.It+被动语态+that…
1)Itiswidelyrecognizedthatextensivedeforestationcontributedtoheavysummerflooding.(众所周知)
2)Itisreportedthat800000applicantssatfortheNationalMaster’sEntranceTestin2003.(据报道)
3)Itisestimatedthattwothirdsofthecitiesofourcountrywillbeinacuteshortageoffreshwaterby2010.(据估计)
4)Itisgenerallyacceptedthattopracticeeuthanasiaonapatientwhoisstillaliveisinhuman.(人们普遍认为)
5)Itmustbeadmittedthatthepricewarwilldisturbthenormalorderofthemarket.(必须承认)
6)Itcannotbedeniedthattheovergrowthoftourismmaydestroytheecologicalbalanceofsomescenicresorts.(不可否认)
7)Itisknowntoallthatphysicalexercisescanimproveandenrichourphysicalandmentalwell-being.(众所周知)
8)Itgoeswithoutsayingthatouractualknowledgeofnaturallawsisstillimperfectandlimited.(毫无疑问)
2.Itis+形容词+todosth/that…
1)Itisobvious/evident/clear/apparentthatthesituationiscauseddirectlybyexcessivecommercialfishing.(很显然)
2)Itisunderstandable(inevitable)thatpeople’sattitudesaredivergentonthiscontroversialissue.(可以理解/不可避免的是)
3)Itisunimaginable(incredible/unbelievable)thatsuchaboyof17shouldhavehadthreenovelspublished.(难以置信的是)
4)Itisimperativethatsomethingurgentbedonetocombatthewidespreaduseofillegaldrugsamongteenagers.(…是很有必要的)
5)Itisupsettingtofindpeoplewhobehavedifferentlyfromus.Wemay,atfirst,assumethatsomethingiswrongwiththem.(…是令人恼火的)
6)Itisimpossibletoconcentrateifyouaretenseornervous.(…是不可能的)
7)Itishighlynecessaryforourgovernmenttostopthecorruptionofgovernmentofficials.(某人很有必要做某事)