句型4It'shigh/abouttimethatsomebodydid（shoulddo）（should通常不省略）…早就该……[例句]It'stimethatyouwenttoschool．＝It'stimethatyoushouldgotoschool．It'shightimethatwedidsomethingtoimproveourenvironment．该是我们为环保做些事情了。Ithinkit'shightimethatshemadeuphermind．我想她该拿定主意了。句型6as，though，although引导的让步状语从句。[注意]although位于句首；though位于句首或句中；as位于句中＝though。它的词序是把句中强调的形容词、副词、动词或名词放在连词前。[参考倒装结构]请注意下列句式的变化：[例句]1．Although/ThoughI'myoung，IalreadyknowwhatcareerIwanttofollow．→Youngas/thoughIam，IalreadyknowwhatcareerIwanttofollow．我虽然年轻，但我已经明白我应该追随什么样的事业。2．Although/ThoughIrespecthimverymuch，Icannotagreewithhisidea．→Muchas/thoughIrespecthim，Icannotagreewithhisidea．虽然我很尊重他，但是我不同意他的观点。3．Although/Thoughheisachild，heknowsalotofChinesecharacters．→Child（省略冠词）as/thoughheis，heknowsalotofChinesecharacters．他虽然还是个孩子，却认识了许多汉字。4．Althoughhetried，hecouldn'tsolvetheproblem．→Tryashemight，hecouldn'tsolvetheproblem．尽管他努力了，但是他没有解决问题。5．Althoughitisraining，I'mgoingoutforawalk．→Rainingasitis，I'mgoingoutforawalk．天虽然在下雨，我还是要出去散步。6．Strangeasitmayseem，nobodywasinjuredintheaccident．这次意外虽然显得不可思议，却没有人受伤。7．MuchasIwouldliketohelp，Ihavealottodo．虽然我很想帮助你，但是我有很多事要做。8．Objectasyoumay，Iwillgo．纵使你反对，我也要去。句型7…before…特殊用法（1）"没来得及……就……"[例句]Therooffellbeforehehadtimetodashintotheroomtosavehisbaby．他还没有来得及冲进房间救孩子，房顶就塌了。HeranoffbeforeIcouldstophim．我还没有来得及阻止，他已经跑了。Tomygreatdisappointment，myfavoritesingerlefttheconcertbeforeIcouldhaveawordwithher．让我非常失望的是，我还没有来得及和我最喜欢的歌手打招呼，她就已经离开了。句型8…before…特殊用法（2）"过了多久才……"或"动作进行到什么程度才……"[例句]Theywalkedaboutfiftymilestothewestbeforetheysawavillage．他们西行50英里才看到一个村庄。Theworkersworkeddayandnightaboutthreedaysbeforeeverythingreturnedtonormal．工人们连续工作3天才使一切恢复正常。Healmostknockedmedownbeforeheknewit．他几乎撞到我了才意识到。Wehadwalkedalongwaybeforewefoundsomewater．我们走了很长的路才找到一点水。FiveyearswentbybeforeIknewit．不知不觉，五年过去了。句型9Itwas＋时间段＋before…．"过了多久才（怎么样）……"Itwasnotlongbefore…．"不久，就……"Itwill（not）be＋时间段＋before…．"要过多久（不久）……才……"（before从句谓语动词要用一般时态）[例句]Itwasnotlongbeforehesensedthedangeroftheposition．不久他就意识到他处境的危险。Itwasfivedaysbeforehecameback．五天后他才回来。Itwillbehalfayearbeforeyougraduatefromtheschool．再过半年你才能毕业。Itwillnotbelongbeforetheyunderstandeachother．他们大概不久就会互相了解。句型10incaseof…（＋n．）"以防；万一"；incasethat…"以防，万一……"（谓语动词用一般现在时态或should＋动词原形）[例句]Incaseoffire，whatshouldwedo?PleaseremindmeaboutitincaseIforget/shouldforget．万一我忘了，请提醒我。Incase（that）Johncomes/shouldcome，pleasetellhimtowait．Pleasetakeyourumbrellaincase（thatitrains/shouldrain）．带上雨伞，以防下雨。句型11It强调句型强调句的基本构成：Itis/was＋被强调的部分＋who（主要指人时）/that＋其余部分[注意1]这种结构可以强调句子的主语、宾语、状语（包括时间，地点，方式，原因等），但是不能强调谓语动词（参考句型15）。原句的谓语动词如果是现在...
