Part 5 Unit 8 Green Earth 课件-【中职专用】高一英语精研课堂（高教版2021·基础模块2）

Unit8GreenEarthOurearthneedseveryone’sprotection.TheUsageofItProverbswith'it'①It is never too old to learn. 

活到老, 学到老。②It is easier to fall than to rise. 

摔倒容易爬起来难。③It is no use crying over spilt milk. 

覆水难收。it用作代词TheUsageofIt1.上文提到的物：2.上文提到的事：3.性别不明的婴儿：4.天气、温度、时间、距离、日期等：Ihaveacat.Itiscute.Shefelloveryesterday.Ithurtheralot.Isitaboyoragirl?Whatseasonisit?Itisspring.it用作形式主语it作形式主语真正主语：toprotecttheenvironment

当动词不定式、动名词或一个句子充当主语时，会使句子失去平衡，显得“头重脚轻”，故it放在句首充当句子的形式主语，而把动词不定式、动名词或从句放到句末做句子的真正主语，以达到句子的平衡。E.g:Itisimportantforus

toprotecttheenvironment.

对我们来说，保护环境是重要的。it用作形式宾语句型：动词+宾语+宾语补足语(n./adj.)forsb.+todo/doing/that

Ithinkitimportanttopractisespeakingintime.Ifinditagoodhabitthatwepractisespeakingintime.ShefeltitnouselearningEnglishwithoutspeakingit.it常用在动词find，think，make，feel，believe，consider

等动词后做形式宾语

it强调句Itisnow

thatIrealizetheimportanceofprotectingtheenvironment.现在我才认识到保护环境的重要性。句型：

Itis(was)+被强调部分+that(who)+其余部分.1.强调句可强调____、____、___等。

(不可强调谓语）2.引导词____、_________________3.be动词:____、____主语宾语状语thatwho/whom(强调人)iswas谓用it强调句改写句子LucysawJackonthestreetyesterday.主宾地点状语时间状语X强调主语强调宾语强调地点状语强调时间状语Itwas

yesterdaythat

LucysawJackonthestreet.ItwasLucy

that/whosawJackonthestreetyesterday.Itwas

Jack

that

/who/whom

Lucysawonthestreetyesterday.Itwas

onthestreet

that

LucysawJackyesterday.it强调句2.Ididn’trealizetheimportanceofprotectingtheenvironmentuntilnow.1.XiaohucriedbecausehewasblamedbyMr.Liinclass.

Itwas______________________________________that

______________.Itwas________________that____________________________________________________________________.我发现：_________________________________去掉Itis/was...that,句意完整。becausehewasblamedbyXiaohuinclass

Mr.LicriednotuntilnowIrealizedtheimportantofprotectingtheenvironmentit常见的句型1.Itis(hasbeen)+时间段+since...

2.Itwas(willbe)+时间段+before...3.Itwas(willbe)+时间点+when... 4.Itis/was(high)timethat...5.Itisthefirst(second/third)timethat...自从...（多久了）。过（多久）才...。当...时，是...。该做某事了。某人第几次做某事。it常见的句型

Itis(high)timethat...

结构中要用虚拟语气，从句动词用should+动词原形（should不能省略）或动词过去式。

e.g：Itishightimethatyoushouldmake(made)fulluseofyourtimetogooveryourlessons.Itishightimethatheshouldgo(went)toschool.Grammar强调句ItwasnotuntilnowthatIrealizedtheimportanceofprotectingtheenvironment.It’stimewetookactionsforournextgenerations!Itwasintheparkthathecalledonpeopletotrygarbagesorting.Itishisfatherwhoweturnedtoforhelplasttime.Task15Readandunderline.阅读以下短文，标出其中的强调句。Whatdoesitmeantobegreen?“Green”ismorethanjustacolor.Italsomeanstakingspecialstepstoprotecttheenvironment.Itisthewater,thelandandtheairwebreathethatweneedtotakecareof.Itispeople’schoicesthatcausepollutioninourworld.Whatcanwedo?Here’safour-stepguidetobeinggreen.Rememberitisrecyclingthathelpsussavetheresources....Task16Readandcomplete.阅读并补全以下强调句。1)

intheArctic

theicecoverismelting.2)

thevolunteer

explainedthewaystostoppollution.3)

inthebighall

theygatheredtolistentothelecture.4)

notuntilthefollowingyear

theyconsideredtheproposal.5)

him

Imetinthemuseumyesterday.ItisthatItiswho/thatItwasthatItwasthatItwasthatTask17Readandrewrite.阅读短文，根据划线部分的提示，将原句改写成强调句。Ladiesandgentlemen,alectureaboutgarbagesortingorganizedbyourcommunitywillbeheldinourlecturehallat3o’clockonNov.6th.Everyoneiswelcome.Afterthattherewillbeacommunitymarket.Youcanexchangeyourbooks,games,toysandotherthingswithyourneighbors.1) .2) .3) .4) .5) .NoticeTask17Readandrewrite.阅读短文，根据划线部分的提示，将原句改写成强调句。1）Itisalectureaboutgarbagesortingthatwillbeheldinourlecturehall.2）Itisinourlecturehallthatalectureaboutgarbagesortingwillbeheld.3）Itisat3o’clockthatalectureaboutgarbagesortingwillbeheld.5）Itisbooks,games,toysandotherthingsthatyoucanexchangewithyourneighbors.4）ItisonNov.6ththatalectureaboutgarbagesortingwillbeheld.Task18Chooseandcomplete.选择合适的短语，用其适当形式补全句子。1)Thetotalnumberof

isincreasingrapidlyinthiscity.2)Anewhousehold

regulationistotakeeffectinShanghai.3)Thiscausesundergroundwaterleveltodropandriversto

.4)Wemustpayattentiontotheriseinpollution

.5)Itwas

IvisitedtheplacethatIfounditreallyworthyofthereputation.•dryup•sharedbike•notuntil•garbagesorting•atthesametimesharedbikegarbagesortingdryupatthesametimenotuntilGreenMondayisourprogramtohelpofficesreducepaperwasteand