选修6第三单元语法it

it的用法,Letsdoexercisestogether,Tellthefunctionsfor“it”ineachsentence:-Whatstheweathertogether?-Itisfine.2.Itishardtocommunicatewithhim.3.Ifindithardtocommunicatewithhim.4.ItisLithatcleanedtheclassroom.5.Itisabook.,做形式主语作形式宾语用于强调结构用作人称代词作为非人称代词习惯用法,做形式主语,Itisimportanttogivethemoneybacktohimontime.Itisnousearguingwithsuchaperson.ItissaidthathewastheNo.1inthecompetition.,it作句子的形式主语,后面被指代的主语包括：,不定式,动名词,主语从句,不定式动名词主语从句,Ithinkitimportanttogivethemoneybacktohimontime.Ifinditnousearguingwithsuchaperson.Iknewitwhenheleftwithoutsayingaword.,2.作形式宾语,不定式,动名词,宾语从句,不定式动名词宾语从句,it作形式宾语时，句子的真正宾语是：,3.用于强调句：Itis/was+被强调部分+that/who+句子的其他部分Mr.Zhuteachesusmath.ItisMr.Zhuthat/whoteachesusmath.Webeginourclassat7:35inthemorning.Itisat7:35thatwebeginourclass.,4.用作人称代词,代替前文提到的人或事物。,我找不到手表，我一定把它给丢了。Icannotfindmywatch.Imusthavelostit.Whoisknockingatthedoor？,Itsme.,5.作为非人称代词,1)Itissunnytoday.2)Itwasnearlymidnightwhenshecameback.3)ItisSunday.4)ItishalfanhourswalkfromourschooltoDaRunfa.5)ItisverybeautifulintheSeven-starCragscenicspot.6)Itis100forthewatertoboil.,天气,时间,日期,距离,环境,温度,7)-Whatsthis/that?-Itsabook.,指示代词,6.It的一些习惯用法Howisitwithyourstudy?学习好吗？Thatsit.这就对了。It(all)/Thatdepends.要看情况。Itisalloverwithme.我完蛋了。Wemustfightitout.我们必须坚持到底。Icanthelpit.我没有办法。,1.Itisyouaskedmetohelpyou.2.Thereweresomechildrencryinginthehouse.Itwasterrible.3.ItisquitealongwayfromheretoBeijing.4.Itwasaboutnineoclock.5.HefounditveryinterestingtoknowaboutthehistoryofChina.6.Iwastoldthatitwasdangeroustowalkaloneinthestreet.7.Wecouldntgetoutofthebuildinguntilitstoppedraining.,Exercises,表示强调,人称代词,距离,时间,形式宾语,形式主语,天气,1.Itwasabout600yearsago_thefirstclockwithafaceandanhourhandwasmade.A.thatB.untilC.beforeD.when2.Itwas_Ireachedthere_Ibegantoknowsomethingaboutthematter.A.until;whenB.until;thatC.notuntil;thatD.notwhen;that3.Letsgetthroughtheworkquickly._seemstobelittletimeleftmow.A.ItB.ThatC.ThereD.We,Translat