试题习题、尽在百度仔细审题、认真作答Unit4Astronomy:thescienceofthestarsⅠ.常考单词必背1.harmfuladj.有害的It'sharmfultoyoureyestoreadbooksinthebus.在公共汽车上看书对你的眼睛有害.[快速闪记](1)beharmfulto...对⋯⋯有害(2)harmlessadj.无害的harmn.损害;伤害v.对⋯⋯有害;伤害;损害2.existvi.存在;生存Nothingexistsonthemoonasthereisnowaterandnoair.月球上没有东西生存,因为那里没有水和空气.[快速闪记](1)existin存在于existon靠⋯⋯生存Thereexist(s)/existed...某地有/存在⋯⋯(2)existencen.存在;生存3.puzzlen.谜;难题vt.&vi.(使)迷惑;(使)为难Thepuzzledlookonherfacesuggestedshewaspuzzlingoverthepuzzlingmathproblem.她困惑的表情暗示了她正在思考那个令人困惑的数学问题.[快速闪记](1)beinapuzzle感到困惑;不知如何是好puzzleabout/over冥思苦想;苦苦思索(2)puzzlingadj.令人迷惑的puzzledadj.感到迷惑的4.pulln.&vt.拉(力);拖;牵引力Shepulledhissleevetogethisattention.她拉拉他的袖子以引起他的注意.试题习题、尽在百度仔细审题、认真作答[快速闪记]pulldown摧毁、推翻、拆除pullin进站停靠;驶向路边(或某处)停靠pullout离站;(使)摆脱困境pullthrough恢复健康;渡过危机5.massn.质量;团;块;大量;(复)群众Ihavemassesofworktodo.我有大量工作要做.Ⅱ.高频短语必会1.intime及时;终于Luckyforhim,hewasjustintimeforthebus.幸运的是,他及时赶上了公共汽车.[快速闪记]ontime准时;按时atatime一次;每次atonetime曾经;一度;同时attimes有时;偶尔atnotime决不innotime马上;立刻2.givebirthto产生;分娩Toourgreatjoy,mysister-in-lawgavebirthtoababyboy.使我们大为高兴的是,我嫂子生了个男孩.[快速闪记]atbirth出生时bybirth天生地;生来;在血统上3.inone'sturn轮到某人;接着Whenitwasinmyturn,Iwastooexcitedtospeak.当轮到我时,我激动地都说不出话来了.[快速闪记]inturn依次;轮流;因此;因而byturns轮流;依次taketurnstodosth/indoingsth轮流做某事试题习题、尽在百度仔细审题、认真作答Itissb'sturntodosth轮到某人做某事4.prevent...(from)阻止;制止Noonecanpreventme(from)goingthere.没有人能够阻止我去那儿.[快速闪记](1)protect...from/against...保护⋯⋯不受⋯⋯侵袭(2)同义词:stop...(from)doing...;keep...fromdoing...5.cheerup感到高兴;感到振奋Iwrotethatsongjusttocheermyselfup.我写那首歌只是为了让自己高兴.[快速闪记]cheersbon为某人加油6.nowthat既然Nowthateveryoneishere,let'sbeginourmeeting.既然大家都到齐了,我们就开始开会吧.[快速闪记]引导原因状语从句的连词:nowthat,since,because,as,considering(that),inthat等.7.breakout突发;爆发Somethingunexpectedalwaysbreaksoutinthisarea.在这一地区总有意想不到的事情发生.[快速闪记]breakup解散;打碎breakawayfrom...脱离⋯⋯breakdown打破;坍塌;(精神、身体)垮掉breakin进入;插话breakinto强行进入(某处);突然开始(大笑、欢呼等)8.watchout密切注视;当心;提防YoushouldwatchoutforJohn,whooftenmakesfunofothers.你应该提防约翰,他试题习题、尽在百度仔细审题、认真作答经常取笑别人.[快速闪记]watchover照看;看守lookout注意,当心takecare注意,当心becareful注意,当心Ⅲ.写作句式必学1.Theearthbecamesoviolentthatitwasnotclearwhethertheshapewouldlastornot.地球(开始)变得激烈动荡,不知道这个固体形状是否会继续存在下去.2.Whatisevenmoreimportantisthatastheearthcooleddown,waterbegantoappearonitssurface.更为重要的是当地球平静下来时,水开始在地球表面出现了.3.Thisproducedachainreaction,whichmadeitpossibleforlifetodevelop.这就产生了一个连锁反应,使生命的发展成为可能.4.Sowhetherlifewillcontinueontheearthformillionsofyearstocomewilldependonwhetherthisproblemcanbesolved.所以,在未来的数百万年中,生命能否在地球上延续取决于这个问题能否得到解...