2022年高中英語 Unit 4 astronomy Language points導學案

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1、2022年高中英語 Unit 4 astronomy Language points導學案 學習目標 ： 1. 扎實掌握Reading I中的重點單詞和短語的用法，提升自己的理解力和記憶力； 2. 自主學習，合作探究；學會分析與總結(jié)的方法，并能學以致用； 3. 激情投入，瘋狂記憶，體驗學習的快樂。 學習重點：exist; puzzle 等詞的用法 預 習 案 I. 重點短語完形 1. in all ________________ 向四面八方 2．make up one's____________決心 3．prevent...____________

2、...阻止…… 4．____________eggs下蛋 5．____________one's turn 輪到某人；接著 6．get the hang____________熟悉；掌握；理解 7．watch____________密切注視；當心；提防 look____________當心 8．depend____________依靠 9．____________time及時，終于,遲早，早晚 10．give____________生產(chǎn)；分娩 11．block____________擋住(光線) II. 經(jīng)典句型應用 1．This produced a chain r

3、eaction, which _____ for life to develop.這樣產(chǎn)生的連鎖反應，使生命發(fā)展成為可能。 2．___________ water was to be fundamental to the development of life.水會對生命的發(fā)展起關(guān)鍵作用，這一點在當時并不明顯。 3．__________ _________ life will continue on the earth millions of years to e will _________ _________ whether this problem can be solved.那么在

4、未來的數(shù)百萬年中，生命能否在地球上延續(xù)取決于這個問題能否得到解決。 4．The earth became ________ violent ____________ it was not clear whether the shape would last or not.地球變得如此猛烈，以至于它的形狀能否持久還不清楚。 訓 練 案 1．violent adj. (P25)猛烈的；激烈的；強暴的 必會 violent crime　暴力犯罪 violent storm 暴風驟雨 violent behaviour 暴力行為 violently

5、 adv. 猛烈地；激烈地 violence n. 暴力；暴行 take...by violence 強奪…… ①The violent wind dashed the ship violently against a huge rock.狂風將船猛地推向一塊巨大的礁石 ②Meanwhile the violence continued in Syria.在此期間，敘利亞暴力沖突仍然在持續(xù)。 2．unlike prep. 與……不同；adj. 不相似的；不同的 [教材原句]Water had also appeared on other planets

6、like Mars but，unlike the earth，it had disappeared later.(P26)水已經(jīng)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 會 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 ①Her latest novel is quite unlike her earlier works.她最近的小說和她以前的作品截然不同。 ②It is unlike Be

7、th to drink so much. I wonder if she is all right.貝思喝這么多可不像她平時，我想知道她是否安好。 [特別提醒]　你可知道unlike和dislike在詞性和意思上毫不相干？ _____________________________________________________________________________________ This book is quite _____ anything I've ever read before. A．likely　　　B．unlikely　　C．dislike　 　 D．unl

8、ike 3．exist 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)它們也生蛋，在地球上存在了14000多萬年。 必會 exist on 靠……為生 exist by 靠……方式為生 exist in 存在于……之中 There exist... 某地有……；存在 e into existence 產(chǎn)生；成立；開始存在 in existence 存在 [方法規(guī)律] exist永遠是一個不及物動詞，exi

9、st on和live on同義，exist in和lie in同義。 ①She exists on tea and bread. 她靠茶和面包度日。 ②This law came into existence in 1918.這項法律產(chǎn)生于1918年。 ①_____ exist many opportunities for regional development.地區(qū)的發(fā)展存在許多機會。 ②(xx·唐山質(zhì)檢)It is said that this old building has________for more than three hundred years. A．existe

10、d B．a(chǎn)ppeared C．been built D．e into being 4．thus adv. (P26) 因此；于是 thus＝in this way/so He studied hard, and thus he got high marks. 他學習用功，因此取得了好成績。 易錯提醒：thus是副詞，不是連詞，不能引導從句。 Norman Cousins forgot to turn on TV and ______ missed the important football match. A．thus B．yet

11、 C．still D．even 5．puzzle vt. 使迷惑；使為難；使窘困；感到迷惑 n．(游戲的)猜謎；難題；謎 [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學家們覺得很難解決的最大的難題之一。 必 會 puzzle over/about sth. 苦苦思索；仔細琢磨…… puzzled adj. 迷惑不解的(常用來修飾人及聲音、表情、微笑等) puzzling adj

12、. 令人迷惑不解的(常用來修飾事物) ①What puzzles me is why he left the country without telling anyone.令我百思不解的是他為什么悄悄地離開了這個國家。 ②I have been puzzled over/about this question for weeks.我對這個問題已冥思苦想了好幾個星期。 [方法規(guī)律]你能體會出“I'm confused”和“I'm puzzled”的區(qū)別嗎？老師告訴你，confused強調(diào)“混亂，糊涂，混淆”。Don't confuse Austria with Australia.

13、 puzzled 強調(diào)“困惑不解”。 ①Her ________ look on her face suggested she didn't understand what I said.她臉上迷惑的表情表明她不明白我說的話。 6．crash vt. vi (P29)撞毀；墜毀；發(fā)出巨響；倒閉； n. 相撞，碰撞；撞擊聲 [一句背誦] The plane crashed in the mountains and forty one people was killed in the plane crash.那架飛機在山中墜毀了，41人在飛機失事中喪生。 7. in time

14、(P25)及時；終于；總有一天 必 會 on time　 準時；按時 in no time 立即；馬上 at a time 一次；每次 at one time 曾經(jīng)；一度 at times 有時 for the time being 暫時 take one's time 別著急；慢慢來 [方法規(guī)律] in time表達“總有一天”時，謂語往往要用將來時，at one time作狀語時，謂語要用過去時。 ①If you keep on, you will succeed i

15、n time.如果堅持下去，總有一天你會成功的。 ②We'll have that leak fixed in no time.我們馬上就把那個漏洞補上。 ③Don't recite all together; one at a time.不要一起背誦，一次一個。 ④He seldom, or only at times quarrels with others.他很少，或者說只是有時和別人爭吵。 ①The doctor came ________ ________ to save her life.醫(yī)生及時趕到救了她的命。 ②(xx·江蘇)—Thank God you're saf

16、e! —I stepped back, just ________ to avoid the racing car. A. in time B．in case C．in need D．in vain 8．prevent...from... (P26) 阻止/制止……做 必 會 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...保護某人不受……侵襲 keep sb. doing sth.讓某人一直做某事 ①What

17、can we do to prevent the disease from spreading? 我們能做些什么來防止這種疾病的蔓延呢？ ②We must keep them from getting to know our plans. 我們必須防止他們知道我們的計劃。 ③Wear more clothes to protect yourself from the cold. 多穿點衣服以免凍著。 9. block out (P29) 擋??；遮住(光線聲音等) 必 會 block sb./sth. in 把某人/某物堵住 block...off 堵?。环怄i b

18、lock...up 塞住，封住 ①Black clouds can never block out the sun.烏云不能永遠遮住太陽。 ②Don't park your car here; you'll block my car in.別把車停在這兒。你會把我的車堵在里面的。 ③Police blocked off the city centre streets.警方封鎖了市中心的街道。 訓 練 案 一、根據(jù)句意填入單詞或短語的正確形式。 1. The professor has brought in a good （系統(tǒng)）of teaching lan

19、guage from abroad. 2. There are many （理論） 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 pany. 5. The old lady (生存）only on coffee and bread. 6. She listened with

20、 a (困惑的）expression on her face. 7. The moon’s (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 (預防） from spreading by washing our hands. 10. I stayed up la

21、st night, so today I can’t (振作）up. 二、詞匯串記 Our geography teacher says the earth is only one of the planets of the giant ___________ . other planets, life on the earth, but life’s origin is still a . Different and cultures have sepa

22、rate 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 bine to create stars and other bodies. The second stage is how the earth for

23、med. 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 earth. It also dissolves

24、gases and acids. The third stage is about plants’ and animals’ appearance. At first, plants in the water appeared and . They produced , which encourages animals in the water to exist. Later, green plants on the land caused animals on the land to appear. They first

25、 and became babies. Later, mammals babies directly. The last stage is that humans became the most important animals on the earth. We put too much carbon dioxide in the to cause global warming. We must how things will go and make laws to the earth being too hot. we have taken measures, we will succeed . So let’s and work together.