In the lab英语教案.docx

1、In the lab英语教案In the lab英语教案 教学目标 :wordsandusefulexpressions Firstofall,once,unless,cupboardelectricityturnoff,shut,bythesideof,soap,taste,oil,mix,mixture,rather,finger,insteadof,second,onholiday,message,properAllow,experiment,basin,finally,lively,sadly,request,Petrol,castor,vinegar,dip,suck :Togett

2、hestudentstodoeverythingascarefullyastheycan. : Tosupplythestudentswithaveryharmoniousatmosphereinorderthattheycanhaveasuccessfulunderstandingofthetextanddiscussion. mainPoints:ToletthestudentsmasterandusefreelysomeoftheusefuleverydayEnglish. /Howaboutwhenweleave?. ? ttouchanything. DifficultPoints:

3、 ideasbyusingtheimperativesentencestructure. /unless/as连接的主从句 教学建议 Sincethedialogueandthetextofthisunitareaboutchemistry,theteachermayasksomequestionsaboutchemistryorothersubjectstoleadinthedialogueandthenshowthestudentsthetollsthatareusedinthechemistrylabwhenthetextistaught. Andalsoinordertomakethe

4、classverylivelyandinterestingtheteachermayborrowthetubeswhicharefilledwiththreekindsofliquidsfromthechemistrylabandaskthemtoguesswhatsinthetubesandthenaskthemtowatchtheteachercarefullythendowhattheteacher. Does,ishclass. Inordernottocausesomethingdangeroustohappen,theteachermayfillsomewhitevinegar（白

5、醋,somecookingoil,somealcoholinthetubes. 重点词汇讲解 意为首先，第一 Firstofall,IwanttosayImveryhappytobeherewithyou. Firstofall,wemustmakeadecision. 相关的词组：atfirstwhichisoppositeto”atlast”forthefirsttime第一次 2allow的用法 allow+noun. /nottodosth./ allow+doing Heallowednonoisehere. Heallowedhisboytospendtheweekendwithh

6、isfriends. whydidyouallowhertosmokehere? wedontallowdrinkingatschool. 是连词，作“一旦就”讲。 onceshearrives,wecanstart. onceyourealizeit,youwillstudyhard. onceseen,itcanneverbeforgotten.只要见过一次就难以忘怀。 注意once一般和现在时连用。 是连词，相当于ifnot Hewillnotcomeunlesshishomeworkisfinished.=Hewillcomeifhishomeworkisfinished. youwi

7、llbeintroubleunlessyoufollowmyinstruction.=youwillnotintroubleifyoufollowmyinstruction. unless和notuntil的区别 unless引导从句时多强调条件，而notuntil句型则强调时间。Unless连接的主从句的时态一般是主句是将来时而从句现在时。notuntil连接的主从句中可以使用多种时态。 比较： youwillfailintheexamunlessyoulistentotheteachercarefullyinclass. wewontstartuntilBobcomes. Hedidntf

8、indoutwhathadhappeneduntilhiswifetoldhimaboutit. ttouchanythingunlessyourteachertellsyoutodo. 在此句末的to后省略了touch。在英语里，有些动词像hope,like,want,try,need,助动词如beableto.,begoingto之后，为了避免前后重复，往往只用一个to代表动词不定式。 youcangowithmeifyoudliketo. youmaystayathomeifyouwantto. Idontwanttogothere,buthesgoingto. ? whatabout?

9、与Howabout?可以用来询问消息、提出建议或征询意见，其后可接名词、代词、动名词、副词（如next）和状语从句等。 I? whataboutplayingfootball? whatabouttodaysmatch? 后跟了一个省略了that的从句。当表示“弄确实、使确定”意思时，常用在祈使句中，其后的从句里要用一般现在时。当makesure表示“认为、确信”的意思时，其后的从句时态可视情况而定。 makesureyoucomeearlytomorrow. makesureyourroomisclean. wemadesureyouwerenotcomingtoday.我们认为你今天一定不

10、来了。 其反义词是“turnon” turnup其反义词是turndown /intheend attheendof意为“在末，在尽头”，既可以表示时间的概念也可以表示空间的概念。而intheend只能表示时间的概念,其后不能接of短语，相当于finally,atlast. Attheendofthistermwewillhaveafinalexamination. Hediedintheendthoughthedoctorstriedtheirbest. Thereisahospitalattheendofthisroad. 表示“具有，带有” chinaisacountrywithaspl

11、endidcultureandalonghistory. Iliveinahousewithtwowindows. as为连词，表示方式，意思是“按照、如同” Statethefactsastheyare.要如实地陈述事实。 whydidntyoudoasIasked? like/as的区别 like表示“像、如同”的意思是介词，其后不能跟从句。而as是连词，要接一个从句。as当作介词时表示“作为”。 Hedoesntspeakasothersdo. Hehasabignoselikehisfather.像） Heworksintheschoolasateacherofchinese.（作为）

12、 /instead insteadof是介词短语。意思是“代替、而不是”。其后可以接动名词、不定式、介词短语和名词、代词。可放在句首或句尾使用。 Ifyouarebusy,letmegoinsteadofyou. Theywentthereonfootinsteadofbybus. ThissummerIwenttoQingdaoinsteadofgoingtoBeijing. instead是副词。试比较。 Parentsshouldgivetheirchildrenmoreadviceinsteadofmoney. ,heplaysalldaylong. Thestudentsdidn,e

13、achofthemmadeaface. /smell/sound/look/feel等感官动词的用法。其后必须加形容词。 Theflowerssmellverynice. Theoldwomanlookedveryworried. Theclothfeelsverysoft. ThefoodtastessodeliciousthatIcantwaitanylonger. none为不定代词，意思是“没有一个人或物”。none做主语指代可数名词时，其谓语动词单复数形式都可以，但是当它指代不可数名词时，其谓语动词为单数第三人称形式。none常与表示范围的of介词短语连用并表示全部否定。 Noneo

14、fthemhas/havegotabike. Noneofusis/areafraidoftheghosts. Noneofthismoneyismine. -Howmanyapplesdoyouhave?-None. none/noone的比较 none既可以指代人也可以指代物，强调数量，可以用来回答howmany开头的问句。而用法与意思基本相同的noone只能指代人，它们不强调数量，可以用来回答who开头的问句。 -Howmanypeoplecanyouseeinthepicture?-None. -whoisintheclassroom?-Noone.（没有人） 的用法 enough+noun./adj./adv+enough enough可指代可数名词或不可数名词，其谓语动词形式可依据它指代的名词的数来定。 Enoughhasbeensaidonthissubject.在这一点上说的已经够多的了。 -wouldyoupleasehavesomemore?-No,vehadenough. Iamafraidwehaventgotenoughtimetodothework. youreoldenoughtolearntodressyourself.