Unit 4 Astronomy 学案

《Unit 4 Astronomy 学案》由会员上传分享，免费在线阅读，更多相关内容在教育资源-天天文库。

1、Unit4Astronomy:thescienceofthestars导学案Thetwo&thirdperiod:Languagepoints(II—III)主备人：万桂兰审核人：李超华Class_______Name_______Group____【教学目标】：I.【知识与技能目标】：1.Learnsomeusefulwordsandexpressions.2.Understandthetextbetter.【情感态度与价值观目标】:Arousestudents’interesttosearchforthemysteryofspace.I

2、I.【课前自主预习】：补全下面的短语：1._____time及时；终于2._______eggs下蛋3.givebirth_____产生；分娩4.________one’sturn轮到某人；接着5.prevent…______阻止；制止6.block____挡住（光线）7.cheer______感到高兴8.________that既然9.break________突发；爆发10.watch______密切注视；当心11.cool_____冷却12.as______as也；还有……13.depend______依靠；依赖14.getclose

3、____靠近III.【拓展提升】Languagepoints:1.Whatitwastobecomewasuncertainuntil…注：Not…until…直到…才…Itis/wasnotuntil…that…是强调结构…他昨天直到七点才离开学校.e.g.Hedidn’tleaveschooluntilseveno’clock.4------Itwasnotuntilseveno’clockthatheleftschool.2.Theearthbecamesoviolentthatitwasnotclearwhethertheshape

4、wouldlastornot.1)lastvi.持续Thefineweatheronlylastedforafewday.翻译：__________________________Friendshiplastsforever.　翻译_____________________________________3.Theywereintimetoproducecarbon,…,whichweretomakeimportantisintime:soonerorlater;eventually迟早;最终我迟早会遇见他.——I’llseehiminti

5、me.intime(forsth./todosth.):notlate及时；不迟她会及时回来准备晚餐.——Shewillbebackintimetopreparedinner.你认为我们能及时赶上火车吗?Doyouthinkwecangetthere___________thetrain?与time相关的短语:ontime_______innotime________attimes_________atatime___________onceuponatime____________atonetime____________from

6、timetotime__________________(sth)beto(do):①.不可避免要发生或必须发生。Sheistobehonoredforthisgreatwork.②表示按计划、安排要发生的动作Whenaretheytohandintheirplan？③表命令Tellhersheisnottobebacklate!4.Itwasnotimmediatelyobviousthatwaterwastobefundamentaltothe4developmentoflife.1)Itwas(not)obviousthat…显而易见

7、的…2)Befundamentalto对于…来说是必要的5.Thisproducedachainreaction,whichmadeitpossibleforlifetodevelop.Chainreaction连锁反应…makeitpossibleforlifetodevelop.使生命的发展成为可能makeit+adj./n.sb./sth.todosth.组长让我们可以一起合作.Thegroupleader____________________________老师让他们跟容易地明白那个问题.Theteacher___________

8、________________.6.…allowedtheearthtodissolveharmfulgases…harmfuladj.opp:harmlessharmn.be