高中英語(yǔ)Unit4GlobalWarming重點(diǎn)難點(diǎn)及考點(diǎn)解析學(xué)案新人教版選修

1、 Unit 4 Global Warming學(xué)案2重點(diǎn)、難點(diǎn)及考點(diǎn)解析一、重點(diǎn)單詞1compare1vt. 比較；對(duì)照。如： Compare your answers with those at the back of the book to see if they are right. 把你的答案同書后面的答案對(duì)照一下，看看是否正確。 My handwriting can not be compared with my fathers. 我的書法不能與我父親的相比。 2vt. 喻為；比擬。如： Mans life is often compared do a candle.人生常被比為蠟燭。

2、 Shakespeare compared the world to a stage.莎士比亞把人世比做舞臺(tái)。 comparewith表示“把與相比（同類相比）” compareto 表示“把比做（異類相比，比喻）” compared to /with 與相比, 只能作狀語(yǔ)2amount n. 數(shù)量 習(xí)慣用語(yǔ)：an amount of 相當(dāng)數(shù)量的; 一些 修飾不可數(shù)名詞amounts of 相當(dāng)數(shù)量的; 一些 修飾不可數(shù)名詞large amounts of money 大量的金錢3concern v.使擔(dān)心；使關(guān)心；使煩惱  The boy's poor performanc

3、e at school concerned his parents. 這個(gè)男孩在學(xué)校很差的表現(xiàn)，使他父母很擔(dān)心。   注意：其過(guò)去分詞concerned通常作形容詞用，意為“擔(dān)心的；煩惱的；憂慮的”。 The concerned parents were all concerned for the children's safety. 憂心忡忡的家長(zhǎng)們都為孩子們的安全擔(dān)憂。 涉及；與有關(guān)或相關(guān)Attend to what concerns you. 注意與你有關(guān)的事物。注意：其過(guò)去分詞concerned常用來(lái)作表語(yǔ)，意為“和有關(guān)；牽涉”；而作定語(yǔ)，則意為“有關(guān)的”。

4、 It is reported that the pop singer is concerned with selling drug.據(jù)報(bào)道，那個(gè)流行歌手涉嫌販毒。 He asked all concerned to take an active part in helping the girl. 他要求所有相關(guān)的人積極幫助那個(gè)女孩。 、concern作名詞 1. 有關(guān)的事（可數(shù)）  That's my concern, so I'll do as I like about it. 那是我的事，因此，我想怎么做就怎么做。 1 關(guān)懷；關(guān)心（不可數(shù)） Some peopl

5、e don't show much concern for our environment. 有些人不太關(guān)心我們的環(huán)境。3擔(dān)心；擔(dān)憂 She showed great concern about you.她很為你擔(dān)心。4. rangerange v.排列, 使成行；偏袒，站在的方面。 n. ：范圍(尤指從到各種種類,可供選擇的范圍等，可加不定冠詞) ；排列 beyond the range of 超越的范圍out of ones range 某人達(dá)不到的這家商店商品品種多。The shop keeps a wide range of goods.v.排列, 使成行；偏袒，站在的方面。主

6、要搭配為：+名詞/代詞；+介詞+名詞/代詞；?？捎糜? 1. 被動(dòng)結(jié)構(gòu) 2. range oneself； 3. range from to / betweenand 從到不等。老師令其學(xué)生沿著小徑排隊(duì)。The teacher _along the path.溫度在15度到35度之間。The temperature_.我們應(yīng)當(dāng)列身于法律與秩序的一邊。We should _ on the side of law and order.Keys：ranged his students；ranges from 15 to 35 degrees；range ourselves二、重點(diǎn)短語(yǔ)1 come a

7、bout come about 發(fā)生，造成 相當(dāng)于happenWhen Mother woke up, she didnt know what had come about. Ill never understand how it came about that you were late three times a week. Do you know how the air accident came about? 2keep on 繼續(xù) +doing sth.他們雖然很累了，還是繼續(xù)工作。They keep on working although they are tired.3build

8、 up逐步建立，增加，增進(jìn)build up ones fortunebuild up ones strengthbuild up the businessThis built up my hope after the interview.Sediment (沉淀物)builds up on the ocean floor.4make a difference make a difference(1)有很大差別, 有很大不同(2)有很大的關(guān)系/影響make some/ no difference to對(duì).有些/沒(méi)有關(guān)系That makes no difference to me.那對(duì)我沒(méi)有影響。

9、Exercise can make a great difference to your health.鍛煉對(duì)你的健康產(chǎn)生很大的影響。5. put up with put up with 忍受;忍耐;受苦That woman, as a housewife, has a lot to put up with. 作為家庭主婦,那女人得忍受很多煩惱。知識(shí)拓展put aside 節(jié)省(錢、時(shí)間);儲(chǔ)蓄;把放在一邊 put away 收拾起來(lái);儲(chǔ)存(錢);喝掉 put back 放回原處;拖延 put down 寫下;記下;控制 put forward 提出(意見(jiàn)、建議);推薦 put off 延期;

10、推遲 put on 假裝;增加;上演(戲劇) put out 熄滅;使憂慮;撲滅;出版put up 舉起;張開(kāi)(傘);張貼;為提供食宿 6. so long as / as long asas long as 只要，如果As long as there is life there is hope. 留得生命在,不怕沒(méi)希望. You can go out, as / so long as you promise to be back before 11 o'clock. 你可以出去,只要你答應(yīng)在11點(diǎn)以前回來(lái). I'll accept any job as / so long a

11、s I don't have to get up early. 只要不必早起,任何工作我都可以接受. 在用as / so long as連接的從句中,當(dāng)其謂語(yǔ)為be,而主語(yǔ)和主句的主語(yǔ)相同時(shí),則從句的主語(yǔ)和be可以省略。如: I'm sure we are safe as long as (we are) in his care. 我深信只要在他的保護(hù)下,我們就會(huì)平安無(wú)事. 三、重點(diǎn)句型1What do you think green house gases do?本句中think后接了一個(gè)由what引導(dǎo)的賓語(yǔ)從句。但應(yīng)注意的是：特殊賓語(yǔ)從句即當(dāng)一般疑問(wèn)句主句的謂語(yǔ)動(dòng)詞是 th

12、ink, believe，suppose，consider, imagine，guess 和 suggest 等時(shí)，表疑問(wèn)的詞要放在主句前即句首。例如：正 Who do you think will win in the game?誤 Do you think who will win in the game?當(dāng)然一般情況下賓語(yǔ)從句的疑問(wèn)詞應(yīng)放在主句之后，例如：誤 Why do you know we can't cut down the big tree?正 Do you know why we can't cut down the big tree?2There is no

13、 doubt that.一、作不可數(shù)名詞,作"疑惑;懷疑”肯定句中doubt多接whether (一般不用if代替) 同位語(yǔ)從句。如: There's some doubt whether he'll keep his promise. 他會(huì)不會(huì)信守諾言還難說(shuō)。 She had her doubts whether the new book would sell well. 她懷疑新書是否會(huì)暢銷。否定句中doubt多接that同位語(yǔ)從句。如: There is no doubt that they will ask you for help. 毫無(wú)疑問(wèn),他們會(huì)請(qǐng)你幫忙

14、的。 I have no doubt that you will succeed. 我毫不懷疑你會(huì)成功的。 二、作及物動(dòng)詞常用于下列句型中,作"懷疑;不能肯定;不大相信"解,一般不用進(jìn)行時(shí)態(tài)。用于否定句或疑問(wèn)句,后接that引導(dǎo)的賓語(yǔ)從句。如: I don't doubt that he is telling the truth. 我毫不懷疑他在講真話。 Do you doubt that he will win the match? 你懷疑他會(huì)贏這場(chǎng)比賽嗎? 用于肯定句,一般接whether 或if引導(dǎo)的賓語(yǔ)從句.如: I doubt whether we wil

15、l make a profit out of it. 我認(rèn)為我們不可能從此事中獲利。 We doubt if she will be persuaded. 我們不知道她會(huì)不會(huì)被說(shuō)服。 3Some byproducts of this process are called “greenhouse” gases, the most important one being carbon dioxide.the most important one being carbon dioxide 是一個(gè)獨(dú)立主格結(jié)構(gòu)，由名詞+分詞構(gòu)成，在句中做補(bǔ)充說(shuō)明或伴隨的狀況。_(時(shí)間允許的話)，I will show

16、you around the city._(今天是星期天)，I dont have to go to work._(沒(méi)有人要說(shuō)的話)，the meeting was closed.Keys：Time permitting；Today being Sunday；Nobody having any more to say4Without the green house effect，the earth would be about thirty-three degrees Celsius cooler than it is.這是一個(gè)含蓄虛擬條件句有時(shí)假設(shè)的情況并不以條件從句形式表示出來(lái)，而是通過(guò)一

17、個(gè)介詞短語(yǔ)或其他方式表示。常用的詞或短語(yǔ)有：without, but for，but that，otherwise，or，but等。 Without your help ( = If we had not had your help)，we could not have succeeded要是沒(méi)有你的幫助，我們是不會(huì)成功的。 四、 疑難辨析 1result in/ result fromresult in 結(jié)果; 致使; 導(dǎo)致主語(yǔ)：起因 in 的賓語(yǔ)：結(jié)果Acting before thinking always results in failure.做事不先考慮總會(huì)導(dǎo)致失敗。The acci

18、dent resulted in the death of two people.這場(chǎng)意外事故造成兩人死亡。result from 起于, 由于, 由引起，主語(yǔ)： 結(jié)果 from 的賓語(yǔ)：起因His sickness resulted in eating too much. (in / from)2take place, happen, occur, come about和break out用法區(qū)別 這些詞或短語(yǔ)都有“發(fā)生”的意思，但用法各不相同，區(qū)別如下： (1). take place 表示“發(fā)生、舉行、舉辦”，一般指非偶然性事件的“發(fā)生”，即這種事件的發(fā)生一定有某種原因或事先的安排，例如

19、： Great changes have taken place in our hometown during the past ten years. The Olympic Games of 2008 will take place in Beijing. (2) .happen作“發(fā)生、碰巧”解，一般用于偶然或突發(fā)性事件，例如： What happened to you? (一般不說(shuō)：What did you happen?) Maybe something unexpected happened. I happened to see him on my way home. = It happened that I saw him on my way home. (3). occur作“發(fā)生、想到、突然想起”解，其意義相當(dāng)于happen，例如： What has occurred? (=What has ha