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Itbe+time(时间)+conj.句型在各类考试和历届高考试题中it+be+time+conj句型以不同的形式出现,往往使考生顾此失彼,一头雾水,原因在于没有搞清楚各个句型的特点及实质,现结合历届高考题分别予以探究,以便考生在应用中有的放矢.(一)Itis/hasbeen+时间段+since+clause此句型的要点(1)在于since前后句子的时态.since前的时态为is或hasbeen,后的时态为一般过去时Itis(hasbeen)tenyearssinceIjoinedthearmy.译为:我参军已经十年了.要点(2)since后的动词若为延续性或状态性动词,应译为否定或相反,若为短暂性动词按字面意思翻译.Itis(hasbeen)tenyearssinceIwasasolider.=Itis(hasbeen)tenyearssinceIleftthearmy.译为:我复员十年了.ItistenyearssinceIsmoked=ItistenyearssinceIstoppedsmoking译为:我戒烟十年了.Itisfiveyearssinceheworkedhere．他不在这儿工作已经5年了。练习:1-Whatwasthepartylike？-Wonderful.It’syears____Ienjoyedmyselfsomuch.A:afterB:beforeC:whenD:since思考:该句怎么翻译？(我好几年没玩的那么尽兴了)2.IliveinBeijingnow,that’stosay,it’stenyearssinceI____Beijing.A:livedinB:leftforC:leftD:wasin3.I’mateachernow,that’stosay,itistenyearssinceI___ateacher.A:wereB:wasC:becameD:turned(二)Itwillbe(was)+时间段+before+一般现在时态的clause(一般过去时)Note:此句型和句型(一)的共性都加时间段,差异在于前后的时态和翻译Eg:1.ItwillbetenyearsbeforeIreturnhome.译为:要过十年我才能回家.2.Itwastenyearsbeforehefoundhislostboy.译为:过了十年他才找到了他失踪的儿子.练习:1.Itisreportedthatitmaybetwoorthreemonths_____itispossibletotestthismedicineonanimalsA:sinceB:afterC:beforeD:when2.-Howlongdoyouthinkitwillbe______Chinasendsamannedspaceshiptothemoon？-Perhapstwoorthreeyears(2006.福建)A:whenB:untilC:thatD:before3.Howlongdoyouthink____thecomputercompanybringsoutanewproduct？(2005.上海)A:itwillbebeforeB:willitbeuntilC:willitbewhenD:itwillbethat(三)Itwillbe(was)+时间点+when+一般现在时态的clause(一般过去时)Note:和句型(二)比较:前后时态一致,但此句型中为时间点而非时间段Eg:1.ItwillbemidnightwhenIreturnhome.译为:我回到家的时间将是午夜.2.Itwasnoonwhentheaccidenthappened译为:事故发生时已是正午.练习:1.___was1979____Igraduatedfromuniversity(1997.上海)A:That;thatB:It;thatC:That;whenD:It;when2.Itwasbreakfast_____ourteacherpunishedme(2004.北京)A:whenB:untilC:sinceD:before(四)Itis(was)+时间点+that的强调句型Note:与句型(三)比较时间前通常有介词且去掉itis(was)……that之后句子仍然成立。Eg:①ItwasinthemorningthatIwasrobbedinthestreet.=ItwasthismorningthatIwasrobbedinthestreet.②Itwasat7:00thatImetTomthismorning.=Itwas7:00whenImetTomthismorning.综合操练：①Hewastoldthatitwouldbeatleastthreemoremonths____hecouldrecoverandreturntowork.(2007.江西)A:whenB:beforeC:sinceD:that②ThefieldresearchwilltakeJoneandPaulaboutfivemonths;itwillbealongtime___wemeetthemagain.(2007.安徽)A:afterB:beforeC:sinceD:when③Itwassometime___werealizedthetruth(2005.山东)A:whenB:untilC:sinceD:before④Itisalmostfiveyears____wesaweachotherlasttime(2005.北京)A:beforeB:sinceC:afterD:when⑤Itwasabout600yearsago____thefirstclockwithafaceandanhourhandwasmade(NMET.1997)Answers:（一）DBC（二）CDA（三）DA（四）BBD(过了一段时间后我们才知道真相)Bthat