“Itis…”句型是议论文写作中经常出现的句法结构，考生们应该有意识地做一些积累和记忆，以备平时操练及考试中使用。下面为相关句型的小的汇总，考生们可以反复操练，直至很自如地想到它，用到它。

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）