人教版 选修六 Unit 4 Global warming Grammar课件 （共31张PPT）.ppt

theuseofit 2 unit4grammar 在上一单元我们已经讲解了it在句中可以用作许多成分 在本单元我们用图表的形式进行整理使同学们对it的用法有系统的掌握 我们用图表的形式对it的用法进行的归纳 相信同学们已经对it的用法有了更清晰的认识 接下来我们对it在强调句中的用法做一小结 用在强调句型中 为了强调句子的某一成分 通常是主语 宾语或状语 常用结构 itis was 被强调部分 that who imettominthestreetyesterday itwasiwho that mettominthestreetyesterday itwastomthatimetinthestreetyesterday itwasinthestreetthatimettomyesterday itwasyesterdaythatimettominthestreet 主语 宾语 时间状语 地点状语 1 peterlentusthemoney 2 theywantmoney 3 allthishappenedonmonday itwaspeterwholentusthemoney itismoneythattheywant itwasonmondaythatallthishappened 根据划线部分把下列句子变成强调句 4 ididn thearfromheruntillastsummer 5 whydoeseveryonethinkiamnarrow minded itwasnotuntillastsummerthatiheardfromher whyisitthateveryonethinksiamnarrow minded 口诀 代词it本意它 既可指这又指那 时间天气均可指 谈到距离也用它 假主假宾均可作 强调句型跟that it在句子中可以作如此多的成分 那么我们如何区分it在句中的不同成分呢 1 itistwoyears ijoinedthearmy a beforeb sincec thatd after2 itwastwoyears ijoinedthearmy a beforeb sincec thatd after practice 3 itwasnotuntil1920 regularradiobroadcastbegan a whileb whichc thatd since4 isafactthatenglishisbeingacceptedasaninternationallanguage a thereb thisc thatd it 5 itwasabout600yearsago thefirstclockwithafaceandanhourhandwasmade a thatb untilc befored when6 ihate whenpeopletalkwiththeirmouthsfull a itb thatc thesed them 7 theparkersboughtanewhousebut willneedalotofworkbeforetheycanmovein a theyb itc oned which8 noneedforustodiscusstheproblemagainsinceithasalreadybeensettled a ithasb therehasc itisd thereis 9 wasin1979 igraduatedfromtheuniversity a that thatb it thatc that whend it when10 whatapitymynewcomputerdoesn twork mustbesomethingwrongwithit a itb therec thisd that 11 ilike intheautumnwhentheweatherisclearandbright a thisb thatc itd one12 someoneisknockingatthedoor butwhocan be a oneb hec shed it 13 aknockonthedoormadehimlookup but wasonlythemanager a thisb thatc shed it14 someoneisringingthedoorbell goandsee a whoisheb whoheisc whoisitd whoitis 15 is necessarytocompletethedesignbeforenationalday a thisb thatc itd he16 does matterifhecan tfinishthejobontime a thisb thatc hed it 17 worriedherabitthatherhairwasturninggrey a thatb itc whatd this18 theyhavemade arule intheroom a this nottosmokeb it smokingc it tonotsmoked it nottosmoke 1 it sdifficulttorememberalltheirnames 2 it sveryquietinthecaf 3 itrainedforthreedays 4 hemadeitclearthathedidn twanttospeaktome 5 itwasnicetomeetyou 形式主语 代替 circumstance weather 形式主语 代替 discussthefollowingsentencesandtellthefunctionof it 形式宾语 代替 6 itwasontuesdaythatsmithcame 7 it sthreemilesfromheretothenearestgarage 8 atallmanstoodupandshookhands itwascaptainjim 9 ihearyouboughtanewbike canyoushowittome 用于强调句型中 distance 人称代词 代表前面提到的人 人称代词 代表前面提到的物 10 itwasfiveo clockwhenwegotbackhomeyesterday 11 itwasdirtyandwetbelowtheshipwheretheslaveswerekept 12 itwasonthisc