1、语法专题十：it的用法1. 指代事物、动物、婴儿或未知的人。2. 指天气、时间、距离、自然现象、环境等。3. 代替不定式，作形式主语或形式宾语(常与feel, consider, find, believe, make, take, imagine, think, suppose, regard等连用)。4. 代替动名词，作形式主语或形式宾语：It is no good / no use / useless / dangerous + doing I think it no good / no use / useless / dangerous + doing I think it no us
2、e complaining about their prejudice.5. 代替主语从句、宾语从句，作形式主语或形式宾语：It seems / appears / happens / turns out / proves + that It is certain / likely / possible / probable + that We have made it clear that she has nothing to do with the case. 6. 用于强调句：It is / was that / who A student witnessed the car accid
3、ent at the turning last night. (1 ) ( 2 ) ( 3 ) ( 4 )(1) _.(2) _.(3) _.(4) _.It is not until +被强调的部分+ thatI didnt realize she was a famous film star until she took off her dark glasses._. 7. 其他重要句型： It is important (necessary, right, strange, natural) that（should+动词原形）It is said (reported, learned)
4、thatIt is suggested (ordered) that（should）+动词原形It is a pity (a sham) that （should）+动词原形It happens (seems, looks, appears ) that.It occurs to sb. to do / that：使某人想起It is/ has been +一段时间 + since .+过去时It will be +一段时间+ before . It looks ( seems ) as if It is no wonder：难怪When it comes to：当谈到It comes abo
5、ut that：发生8. appreciate, love, like, hate, see to(负责，注意) + it + 从句巩固练习：1. Ittookusoveranhour_alongthestreet.A. walkB. towalkC. walkingD. walked2. Ithinkitagreathonour_tovisityourcountry.A. toinviteB. invitingC. havinginvitedD. tobeinvited3. Manypeoplenowmake_aruletobuycardsfortheirfriendsbeforeChris
6、tmas.A. themselvesB. itC. thatD. this4._isverycleartoeveryonethathesroundandtalllikeatree.A. ThisB. WhatC. ThatD. It5. -Itisrainingcatsanddogs. -_.A. SoitisB. Soisit C. NeitheritisD. Neitherisit6. Itsnouse_overspiltmilk.A. cryB. crying C. thatyoucryD. foryoutocry7. Itisimportant_theiroffer.A. reject
7、B. rejectsC. torejectD. rejecting8. Has_beendecidedwhenwearetoholdthesports-meeting?A. thatB. thisC. itD. what9. -DidLiLeicallmewhileIwasout?-Yes,itwas_thatcalledyou.A.himB.heC. whoD. whom10. Idontknow_makesherafraidofhavingherbusinessdiscussed. A. whatitisaboutMarythat B. thatisitabutMarywhat C. wh
8、atisitaboutMarythat D. thatisaboutMarywhat11. Itwaswith greatjoy_ hereceivedthenewsthathislonglostsonwouldreturnhome. A. asB. thatC. soD. for12. Idontthink_difficultforastudenttomasteraforeignlanguagewithinfiveyears. A. thatB. itC. tooD. very13. Itsthesecondtimeyou_ latethisweek. A. arriveB .arrived
9、C. havearrivedD. hadarrived14. Itwillnotbe _wemeetagain. A. longbeforeB. beforelong C. soonafterD. shortlyafter15. Itsdemandedthatwe_thereonfoot. A. nottogoB. dontgoC. notgoD. wontgo16. Itwasnotuntil1936_ basketballbecamearegularpartoftheOlympicGames. A. thatB. whenC. whichD. then17. _ youmettheEngl
10、ishman? A. WhereitwasthatB. Whoitwasthat C. WherewasitthatD. Wherewasthat18. _ certainthathisinventionwillleadtothedevelopmentofproduction. A. ThatsB. ThisisC. ItsD. Whats19. Toms mother kept telling him that he should work harder, but _didnt help. A. heB. whichC. sheD. it20. Itisimportantthatshe_wi
11、thMr.Williamsimmediately. A. speakB. spokeC. willspeakD. tospeak21. _thattheresanothergoodharvestthisyear. A. ItsaysB. ItissaidC. ItwassaidD. Hewassaid22. I really appreciate _ if you can lend your computer. A. thatB. whatC. itD. which23. I didnt _ her _ for help. A. occur; to ask B. occur to; to ask C. occur to; asking D. happen to; that to ask