unit 4 astronomy-the science of the stars练习题

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1、Unit4newwordsandexpressions1.theoryintheory理论上inpractice实际上Yourplanisgoodintheory,butitdoesn’tworkinpractice.2．intime1)Thestormwasintimetostopbeforethesportsmeeting.终于2)You’dbetterreturnitintime.及时3)You’lllearnhowtodoitintime.迟早，总有一天ontime3.unlikedislike[来源:数理化

2、网]UnlikeJohn,Tomdislikesplayingfootball.4.harmfulbeharmfulto对……有害Thesuncanbeharmfultoyourskin.Smokingisharmfultoyourhealth.harmn&v损害，伤害doharmto对……有害harmlessadj.无害的5.inone’sturnWhenit’sinmyturn,I’mtooexcitedtospeak.Hecookedthemealinhisturnthisweek.byturns轮流Wedrov

3、ethecarbyturns.inturn依次，反之Theygavetheirnamesinturn.taketurnstodosth轮流做某事6.preventsb(from)doingsthstopsb(from)doingsthkeepsbfromdoingsth在被动语态中，from都不可省。Therainpreventedus(from)goingthere.Wewerepreventedbytherainfromgoingthere.Weshouldtakemeasurestopreventtheriver

4、frombeingpolluted.7.puzzlen.&v.It’squiteapuzzletouswhyhedidthat.Thequestionpuzzledthem.puzzledadj.Shelistenedwithapuzzledexpression.puzzlingadj.Wefeltpuzzledatthesepuzzlingquestions.8.pulln.&v.Givetheropeagoodpull.用力拉一下绳子。Helpmemovethepiano,youpushandI’llpull.pu

5、lldown拆毁pullaway驶离，开走pullin（火车等）到站，进站pullthrough度过难关/危机pullup停下pullapart拉开9．cheerupIwrotethatsongjusttocheermyselfup.Hecheeredupatthenews.Cheerup!Theresultisn’ttoobad.10.nowthatnowthat相当于since,引导原因状语从句，that可省去。另外不可和so连用。Nowthateveryoneishere,let’sbeginourmeeting

6、.Now(that)youhavegrownup,youmuststopthischildishbehavior.Now(that)youareready,wecangonow.11.watchout(forsth)=lookout(forsth)Watchout!Thereisacarcoming.Watchoutforthieves.Warmingup1.circle1)v.画圆圈；盘旋Theteachercircledthemistakesinredink.Theplanecircledtheairportbef

7、orelanding.2)n.圆,圆形的东西,循环2.match1)v.a..找相似或相配之物match…with…使…和…相配b.(物与物)相配(suit,fit),相等,比得上Hershoesmatchherdress,theylookverywelltogether.Thehotelcan’tbematchedforgoodserviceandfood.2)n.火柴,对手Reading1.Whatitwastobecomewasuncertainuntil…whenthedustsettledintoasolid

8、globe.betodosth.1)表示”应当/必须做某事”,通常用于通知或说明书里.ThebooksyouborrowedaretobereturnedbeforeJuly5.2)表示“按计划或安排将要做某事”，其完成式则表示“本来打算做某事”。Wearetomeetattheschoolgate.Weweretohavegon