Unit-3-A-Healthy-Life-grammar

Unit3AHealthyLifeGrammar:TheUseofItContentsIt用作人称代词It作为非人称代词It作形式主语或形式宾语It用于强调句型It作为引导词用于其它句型Readandanalyzethefollowingsentences.1.Itisabuilding.ItrepresentsChinainShanghaiWorldExposition.2.Itisamovie.ItisactedbyZhaoBenshanandXiaoShengyang.3.Whatisthis?Itisabook.Drawaconclusion:it---词性?______指代___________________还可以替代指示代词_____或______.Pron.前文提到的事物.thisthat1.ItisThursdaytoday.2.Itisverycoldtoday.3.Itisabout-17°Ctoday.4.Itisabout2kmfrommyhometothisplace.5.ItliesinthesoutheastofXi’anwhereIcanmeetmydearfellowstudents.6.Itis10o’clocknow.Readandanalyzethefollowingsentences.dateweathertemperaturedistanceplaceWhatdoes“it”inthesesentencesreferto?Conclusion:it可以用作非人称代词，表示_____,_____,______,______,______,_____等。日期天气时间距离地点温度time1.Itwasveryniceofthearmytohelpthesurvivorsout.Tohelpthesurvivorsoutwasverynice.2.Itisnousecryingoverthespiltmilk.Cryingoverthespiltmilkisnouse.3.Itisamazingthatthesportsmeetinghasthemosteventsinthehistory.Thatthesportsmeetinghasthemosteventinthehistoryisamazing.Readandanalyzethefollowingsentences.Drawaconclusion:it是__________,句子真正的主语是______________________________________________________形式主语动词不定式,动名词，that引导的主语从句Itis+adj.(clear,obvious,true,possible,certain...)that...it作形式主语Itis+adj.(important,necessary,right，strange，natural...)that+sb.+(should)dosth.Itis+adj.+(forsb.)todosth.Itisnogood(use)+doingsth.Itis/was+V.-pp(said,reported,learned,known...)+that...译为“据说,据报道，据悉……”Readandanalyzethefollowingsentences.1.Peoplefinditexcitingtoenjoyhisperformance.Peoplefindtoenjoyhisperformanceisexciting.2.Ithinkitnousewatchinghimcarefully,becausehisactionissoquick.Ithinkwatchinghimcarefullyisnouse,becausehisactionissoquick.3.Hemakesitclearthatheisthebestmagician.Hemakesthatheisthebestmagicianisclear.Drawaconclusion:it是__________,句子真正的宾语是______________________________________________________形式宾语动词不定式,动名词，that引导的宾语从句为方便记忆，我们可将it作形式宾语的句型称为6123结构。6.指主句中常用的动词：think，believe，make，find,consider，feel；1.指的是形式宾语it；2.指的是宾补的两种形式：形容词或名词；3.指的是真正宾语的三种形式：不定式短语，动名词短语或that引导的宾语从句。it作形式宾语WethinkitimportanttolearnEnglish.V+it+tosb.+that…常用的句型有：oweittosb.that…把…归功于…leaveittosb.that…把…留给某人去做…takeitforgrantedthat…认为…理所当然的keepitinmindthat…把…记在心里…Weoweittoyouthatwefinishedtheworkontime.Ileaveittoyourownjudgmentwhetheryoushoulddoit.YoucandependonitthatIwillkeepmypromise.Seetoitthatthegoodsarekeptwell.Hehatesitwhenpeoplelaughatthedisabled.V(phrase)+it+that/when/if从句常用在此结构中的动词（短语）有：enjoy,like,dislike,love,hate,appreciate,prefer,answerfor担保seeto务必counton,relyon,dependoninsiston坚持《新新学案》P39考点3:it用于强调句型《新新学案》P55e.g.:ImetTomintheparkyesterday.ItwasIwho/thatmetTomintheparkyesterday.ItwasTomwho/that/whomImetintheparkyesterday.ItwasintheparkthatImetTomyesterday.ItwasyesterdaythatImetTominthepark.强调的句子成分：强调句型可以强调句子的主语，宾语，表语或状语，强调部分指人时，可用who(主格或宾格)和whom(宾格)代替that。强调句型不可强调谓语动词，若要强调谓语时，则用助动词do/does/did+动词原形，表示“的确，务必”。IdidmeetTomintheparkyesterday.Itis/was+被强调部分+that/who...1.强调句中只用两种时态，即一般现在时(is)和一般过去时(was)。e.g.:Mr.Wangalmostvisitstheclubeveryday.→ItistheclubthatMr.Wangalmostvisitseveryday.WehadawonderfulholidayinParislastyear.→ItwasinParisthatwehadawonderfulholidaylastyear.2.强调句型中的be动词is或was永远用单数.e.g.:ItisIthatamastudent.ItwasTomandhissisterthatwerepraised.使用该句型有以下几点请注意：e.g.:Itisin2012thatthe30thOlympicGameswillbeheldinLondon.→Isitin2012thatthe30thOlympicGameswillbeheldinLondon?强调句型的一般疑问句为：Is/wasit+被强调部分+that+其他”e.g.:Wherewereyouborn?→Whenwillweleave?→在特殊疑问句中，只能强调特殊疑问词。其结构为：Wh-/How(特殊疑问词)+is/wasit+that+其他Wherewasitthatyouwereborn?Whenisitthatwe’llleave?如果对含有not…until…引导的时间状语进行强调时，需将否定副词not连同until引导的时间状语一起提前并被强调。即：Itis/wasnotuntil+被强调部分+that（主句不倒装）...e.g.:Shedidn’tgotobeduntilherfathercameback.Itwasuntilherfathercamebackthatshedidn’tgotobed.Itwasnotuntilherfathercamebackthatshewenttobed.not...until...的强调句型：不要混淆强调句和其他从句。Itis/was…that…为强调句标志，去掉后仍可组成一个完整的句子，只是没被强调;而其他从句一般不具备这一特征。比较：第一句不是强调句，是由when引导的定语从句，不可改为that,因为去掉itwas和that后，构成一个不完整的句子；第二句是强调句，that不可改为when．Itwasteno‘clockwhenwegothomelastnight．我们昨晚到家时已十点了。Itwasatteno‘clockthatwegothomelastnight．我们昨晚是在十点到家的。考点4:it作为引导词用于其它句型Itwas5o’clockwhenhecamehere.Itis...when...该句型中的when引导的是一个时间状语从句，主句中的it指时间，表语由具体的时间充当，常译为“当……的时候，是……”ItisthefirsttimeIhavebeenhere.=ThisisthefirsttimeIhavebeenhere.Itisthefirst(second...)timethat+havedone...Itwasthefirst(second...)timethat+haddone...考点5:it的固定结构和惯用法用在固定结构中的itTakeiteasy.别着急，慢慢来，别紧张Believeitornot.信不信由你makeit.及时赶到；成功；办成Itdepends.要看情况而定Forgetit别介意，没关系，算了It’suptoyou.由你，随你catchit被责骂；受处罚Howisitwithyourstudy?学习好吗？That’sit.这就对了。Itwenthardwithhim.他身遇不幸。Itisalloverwithme.我完蛋了。Wemustfightitout.我们必须坚持到底。Ican’thelpit.我没有办法。Whenitcomesto(doing)sth.It的一些习惯用法