陕西省榆林育才中学高中英语 Unit 4 astronomy Language points导学案.doc

陕西省榆林育才中学高中英语 unit 4 astronomy language points导学案学习目标 ： 1. 扎实掌握reading i中的重点单词和短语的用法，提升自己的理解力和记忆力； 2. 自主学习，合作探究；学会分析与总结的方法，并能学以致用； 3. 激情投入，疯狂记忆，体验学习的快乐。学习重点：exist; puzzle 等词的用法 预 习 案i. 重点短语完形1. in all _ 向四面八方2make up ones_决心3prevent._.阻止4_eggs下蛋5_ones turn 轮到某人；接着6get the hang_熟悉；掌握；理解7watch_密切注视；当心；提防 look_当心8depend_依靠9_time及时，终于,迟早，早晚10give_生产；分娩11block_挡住(光线)ii. 经典句型应用1this produced a chain reaction, which _ for life to develop.这样产生的连锁反应，使生命发展成为可能。2_ water was to be fundamental to the development of life.水会对生命的发展起关键作用，这一点在当时并不明显。3_ _ life will continue on the earth millions of years to come will _ _ whether this problem can be solved.那么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决。4the earth became _ violent _ it was not clear whether the shape would last or not.地球变得如此猛烈，以至于它的形状能否持久还不清楚。训 练 案1violent adj. (p25)猛烈的；激烈的；强暴的必会violent crime暴力犯罪 violent storm 暴风骤雨violent behaviour 暴力行为 violently adv. 猛烈地；激烈地violence n. 暴力；暴行 take.by violence 强夺the violent wind dashed the ship violently against a huge rock.狂风将船猛地推向一块巨大的礁石meanwhile the violence continued in syria.在此期间，叙利亚暴力冲突仍然在持续。2unlike prep. 与不同；adj. 不相似的；不同的教材原句water had also appeared on other planets like mars but，unlike the earth，it had disappeared later.(p26)水已经在其它星球上消失了，比如火星，但不像地球，它消失的晚一些。必会unlikely adj.不可能的it is unlikely that. 不可能sb. / sth. be unlikely to do sth. 不可能做某事her latest novel is quite unlike her earlier works.她最近的小说和她以前的作品截然不同。it is unlike beth to drink so much. i wonder if she is all right.贝思喝这么多可不像她平时，我想知道她是否安好。特别提醒你可知道unlike和dislike在词性和意思上毫不相干？_this book is quite _ anything ive ever read before.alikelybunlikelycdislike dunlike3exist vi. 存在；生存教材原句they laid eggs too and existed on the earth for more than 140 million years.(p26)它们也生蛋，在地球上存在了14000多万年。必会exist on 靠为生 exist by 靠方式为生 exist in 存在于之中there exist. 某地有；存在 come into existence 产生；成立；开始存在in existence 存在方法规律 exist永远是一个不及物动词，exist on和live on同义，exist in和lie in同义。she exists on tea and bread. 她靠茶和面包度日。this law came into existence in 1918.这项法律产生于1918年。_ exist many opportunities for regional development.地区的发展存在许多机会。(2012唐山质检)it is said that this old building has_for more than three hundred years.aexisted bappeared cbeen built dcome into being4thus adv. (p26) 因此；于是 thusin this way/so he studied hard, and thus he got high marks. 他学习用功，因此取得了好成绩。 易错提醒：thus是副词，不是连词，不能引导从句。norman cousins forgot to turn on tv and _ missed the important football match.athus byet cstill deven5puzzle vt. 使迷惑；使为难；使窘困；感到迷惑 n(游戏的)猜谜；难题；谜教材原句how life began on earth is one of the biggest puzzles that scientists found hard to solve.(p27)地球生命如何起源是科学家们觉得很难解决的最大的难题之一。必会puzzle over/about sth. 苦苦思索；仔细琢磨puzzled adj. 迷惑不解的(常用来修饰人及声音、表情、微笑等)puzzling adj. 令人迷惑不解的(常用来修饰事物)what puzzles me is why he left the country without telling anyone.令我百思不解的是他为什么悄悄地离开了这个国家。i have been puzzled over/about this question for weeks.我对这个问题已冥思苦想了好几个星期。方法规律你能体会出“im confused”和“im puzzled”的区别吗？老师告诉你，confused强调“混乱，糊涂，混淆”。dont confuse austria with australia. puzzled 强调“困惑不解”。her _ look on her face suggested she didnt understand what i said.她脸上迷惑的表情表明她不明白我说的话。6crash vt. vi (p29)撞毁；坠毁；发出巨响；倒闭； n. 相撞，碰撞；撞击声一句背诵 the plane crashed in the mountains and forty one people was killed in the plane crash.那架飞机在山中坠毁了，41人在飞机失事中丧生。7. in time (p25)及时；终于；总有一天必会on time 准时；按时 in no time 立即；马上at a time 一次；每次 at one time 曾经；一度at times 有时 for the time being 暂时take ones time 别着急；慢慢来方法规律 in time表达“总有一天”时，谓语往往要用将来时，at one time作状语时，谓语要用过去时。if you keep on, you will succeed in time.如果坚持下去，总有一天你会成功的。well have that leak fixed in no time.我们马上就把那个漏洞补上。dont recite all together; one at a time.不要一起背诵，一次一个。he seldom, or only at times quarrels with others.他很少，或者说只是有时和别人争吵。the doctor came _ _ to save her life.医生及时赶到救了她的命。(2012江苏)thank god youre safe! i stepped back, just _ to avoid the racing car.a. in time bin case cin need din vain8prevent.from. (p26) 阻止/制止做必会stop sb. (from) doing sth. 阻止某人做某事keep sb. from doing sth. 阻止某人做某事protect sb. from.保护某人不受侵袭keep sb. doing sth.让某人一直做某事what can we do to prevent the disease from spreading? 我们能做些什么来防止这种疾病的蔓延呢？we must keep them from getting to know our plans. 我们必须防止他们知道我们的计划。wear more clothes to protect yourself from the cold. 多穿点衣服以免冻着。9. block out (p29) 挡住；遮住(光线声音等)必会block sb./sth. in 把某人/某物堵住block.off 堵住；封锁block.up 塞住，封住black clouds can never block out the sun.乌云不能永远遮住太阳。dont park your car here; youll block my car in.别把车停在这儿。你会把我的车堵在里面的。police blocked off the city centre streets.警方封锁了市中心的街道。训 练 案一、根据句意填入单词或短语的正确形式。1. the professor has brought in a good （系统）of teaching language from abroad.2. there are many （理论） about the origin of life.3. children should not be allowed to watch (暴力的） movies.4. i believe the affair is (有害的）to the company.5. the old lady (生存）only on coffee and bread.6. she listened with a (困惑的）expression on her face.7. the moons (拉力）on the sea causes the waves. 8. why do you want to kill the hens that （下蛋）eggs every day?9. doctors say many diseases can be (预防） from spreading by washing our hands.10. i stayed up last night, so today i cant (振作）up.二、词汇串记our geography teacher says the earth is only one of the planets of the giant _ . other planets, life on the earth, but lifes origin is still a . different and cultures have separate ideas. the teacher says it may be divided into four stages.the first stage is about how the universe began. a widely accepted can explain it. after the “big bang” , began to form and combine to create stars and other bodies. the second stage is how the earth formed. between 4.5 and 3.8 years ago, clouds and dust in space settled into a solid . the earth became that it often exploded. the and water appeared. water is a matter for life to exist on the e