高一英語必修二第四單元知識點

1、.必修二第四單元適用學(xué)科英語適用年級高一適用區(qū)域人教版教材課時時長分鐘2課時知識點本單元重點單詞本單元重點詞組本單元重點句子教學(xué)目的知識：1、掌握本單元重點單詞。2、掌握本單元重點詞組。3、掌握本單元重點句子。方法：結(jié)合實例，掌握單詞的用法教學(xué)重點詞語辨析1. contain / include 2. reserve / keep / preserve3. reduce / decrease4. fierce / wild / violent詞形變化1. power n. 才能powerful adj. 強(qiáng)有力的; 力量大的powerfully adv. 強(qiáng)有力地; 力量大地2. apprec

2、iate v. 理解并欣賞; 賞識; 高度評價appreciation n. 欣賞; 感謝 appreciative adj. 有欣賞力的; 表示賞識的; 感謝的3. succeed v. 成功; 做成; 到達(dá)目的 success n. 成功; 成就; 成名; 發(fā)財; 成功; 到達(dá)目的successful adj. 獲得成功的; 獲得成效的; 到達(dá)目的的重點單詞1. wild adj. 野生的, 野的, 未馴化的；無居民的, 荒涼的2. die out指物種死光；滅絕, 火漸漸熄滅3. hunt vt. & vi. 打獵; 獵取; 搜索4. distant n. 空間或時間遠(yuǎn)隔的, 遙

3、遠(yuǎn)的5. mercy n. 仁慈; 寬恕; 寬容; 恩惠; 幸運重點詞組1. pay attention to 注意2. die out指物種死光；滅絕, 火漸漸熄滅3. come into being形成；產(chǎn)生不可用于被動語態(tài)或進(jìn)展時態(tài)重點句子1. She turned around and there was an antelope with a sad face looking at her.2. They set the number of animals to be hunted.教學(xué)難點1、單詞，短語正確使用2、單詞短語辨義的考點及易錯點教學(xué)過程一、課程導(dǎo)入 本單元我們將在原有知識

4、的根底上學(xué)習(xí)新的單詞和詞組，擴(kuò)大詞匯量和知識面，進(jìn)一步進(jìn)步英語程度。英語學(xué)習(xí)需要從“聽說讀寫各個方面著手，進(jìn)步整體運用才能。二、復(fù)習(xí)預(yù)習(xí)老師引導(dǎo)學(xué)生復(fù)習(xí)上節(jié)課所學(xué)的知識點， 以提問、回憶的形式進(jìn)展，針對上節(jié)課的作業(yè)進(jìn)展講評、訂正、答疑三、知識講解知識點1：詞語辨析【考察點】詞形變化1. power n. 才能powerful adj. 強(qiáng)有力的; 力量大的powerfully adv. 強(qiáng)有力地; 力量大地2. appreciate v. 理解并欣賞; 賞識; 高度評價appreciation n. 欣賞; 感謝 appreciative adj. 有欣賞力的; 表示賞識的; 感謝的3. su

5、cceed v.  成功; 做成; 到達(dá)目的 success  n.  成功; 成就; 成名; 發(fā)財; 成功; 到達(dá)目的successful adj.  獲得成功的; 獲得成效的; 到達(dá)目的的【練習(xí)】用括號內(nèi)所提供詞的適當(dāng)形式填空1 I will do everything in my _ to help you. power2 He is very _ built. power3 Elephants have _ legs. power4 She shows little or no _ of good music. dusk5 Your help w

6、as greatly _. dusk6 I'm most _ of your generosity. add7 He wasn't a _ as a teacher. add8 If at first you don't _, try, try again. add9 My final attempt to fix it was _.Keys: 1 power2 powerfully3 powerful4 appreciation 5 appreciated6 appreciative7 success8 succeed 9 successful知識點2：詞語辨析1.

7、contain / include【解釋】contain強(qiáng)調(diào)主語含有某種成分或裝有某物。如：include強(qiáng)調(diào)主語包含的人或物是主語的一部分。所以include常譯為“包括。including“包括,是非常常見的表達(dá)形式。【練習(xí)】用上面所提供的辨析詞的適當(dāng)形式填空1. The list _ his name.2. Beer _ alcohol.Keys: 1. included2. contains 2. reserve / keep / preserve【解釋】reserve 正式用詞，指為了將來的用處或其他用處而保存、保存。keep 最常用詞，指長時間結(jié)實地保持合伙保存。preserve

8、主要指為防止損害、變質(zhì)等而保存?！揪毩?xí)】用上面所提供的辨析詞的適當(dāng)形式填空1. Will you _ these documents for us?2. In summer, large crops of fruit may be _ by freezing.3. All the front seats are _ for foreign guests.Keys:1. keep 2.preserved 3. reserved3. reduce / decrease【解釋】reduce 強(qiáng)調(diào)在“數(shù)量、大小，程度或強(qiáng)度方面下降或減少。decrease 側(cè)重強(qiáng)調(diào)“穩(wěn)定地，逐漸地，不斷地減少【練習(xí)】用

9、上面所提供的辨析詞的適當(dāng)形式填空1. The workers _ their wage demands.2. Lack of success _ confidence.Keys: 1. reduced2. decreased4. fierce / wild / violent【解釋】fierce 指人或獸的兇猛殘酷。wild 既可指自然界的荒蕪，未被馴化狀態(tài)，又指人的無法無天，不文明的野蠻行為。violent 指人時側(cè)重極為不安、異常沖動，暗含有暴力行為；也指破壞性的或不可控制的自然力量?！揪毩?xí)】用上面所提供的辨析詞的適當(dāng)形式填空1. She is afraid of his _ looks.

10、2. Who was that _ old lady?3. _ criminals like that are a danger to society.Keys: 1. wild2. fierce3. violent知識點3：重點詞匯1. wild adj. 野生的, 野的, 未馴化的；無居民的, 荒涼的典例 1. He enjoys filming wild animals. 他喜歡拍攝野生動物。2. We walked into a wild mountain region. 我們走進(jìn)荒無人煙的山區(qū)。重點用法be wild about sth/sb對某事物某人極熱心或熱愛be wild w

11、ith 因而發(fā)狂練習(xí) 中譯英1. 群眾欣喜假設(shè)狂。_2. 孩子們都特別喜歡這個新計算機(jī)。_Keys: 1. The crowd went wild with delight.2. The children are wild about the new computer.2. relief n. 痛苦 困苦 憂慮等的減輕或解除典例 1. The drug gives some relief from pain. 這種藥可以減輕一些痛苦。2. I breathed/heaved a sigh of relief when I heard he was safe. 我聽到他平安的消息時才松了一口氣。

12、重點用法much to ones relief 使某人大為放心；使某人深感寬慰練習(xí) 中譯英1. 我最慶幸的是沒有遲到。_2. 見到你在這兒也就放心了。_Keys: 1. To my great relief/Much to my relief, I wasn't late. 2. It's a great relief to find you here. 3. hunt vt. & vi. 打獵; 獵取; 搜索典例 1. Wolves hunt in packs. 狼是成群獵食的。2. Police are hunting an escaped criminal. 警方

13、正在追捕逃犯。重點用法hunt for 試圖找到某物某人hunt after 探求；追求練習(xí) 中譯英1. 我在尋找一本失去的書。2. 許多人一生追求成名，但一無所獲。Keys: 1. I am hunting for a lost book. 2. Many people hunt after fame in their lives but never find it.4. distant n. 空間或時間遠(yuǎn)隔的, 遙遠(yuǎn)的典例 1. The airport is about ten miles distant from the city. 機(jī)場間隔 城市大約十英里遠(yuǎn)。2. She is a d

14、istant cousin of mine. 她是我的遠(yuǎn)房表妹。重點用法be distant with / towards with sb. 對冷淡練習(xí) 中譯英1. 這兩種學(xué)說之間沒有什么關(guān)聯(lián)。_2. 她對媽媽總是很冷淡。_Keys: 1. There is a distant connection between the two theories. 2. She is always distant with her mother.5. mercy n. 仁慈; 寬恕; 寬容; 恩惠; 幸運典例 1. They showed mercy to their enemies. 他們對敵人很仁慈。2

15、. It's a mercy she wasn't hurt in the accident. 她在事故中未受傷, 真幸運。重點用法at the mercy of sb/sth任由某人某事物擺布或控制have mercy on / upon對有憐憫心練習(xí) 中譯英1. 那只船在暴風(fēng)雨中失去控制_2. 可憐可憐我們吧。_Keys: 1. The ship was at the mercy of the storm.2. Have mercy on us!知識點4：重點詞組 1. pay attention to 注意典例 1. Please pay attention to wha

16、t I am saying. 請注意我說的話。2. She turned her attention to a new problem. 她把注意力轉(zhuǎn)移到一個新問題上。短語歸納catch sb's attention 吸引某人的注意draw attention to sth. 注意某事物give one's attention to 注意 練習(xí) 中譯英1. 報紙的大標(biāo)題引起他的注意。_2. 她要我注意報告中的一處錯誤。_Keys: 1. A newspaper headline caught his attention. 2. She drew my attention to

17、an error in the report.2. die out指物種死光；滅絕, 火漸漸熄滅典例 1. The moth's habitat is being destroyed and it has nearly died out. 這種蛾子因棲息地正受到破壞, 幾乎絕種了。短語歸納die away減弱以致覺察不到；淡化die down逐漸降低；減弱be dying 垂死的be dying for/to do sth.渴望die of 死于饑餓；病die from死于外界引起的die hard很難改變；頑固練習(xí) 用die 構(gòu)成的詞組填空1. The noise of the ca

18、r _ in the distance.2. The old traditions are _.3. The man _ a wound 4. I'm _ something to eat. Keys: 1. died away 2. dying out 3. died from 4. dying for 3. come into being形成；產(chǎn)生不可用于被動語態(tài)或進(jìn)展時態(tài)典例Dinosaurs lived on the earth tens of millions of years ago, long before humans came into being.千百萬年前，恐龍就

19、在地球上生活，比人類的出現(xiàn)要早得多。短語歸納come into effect施行come into use投入使用come into power上臺執(zhí)政練習(xí)用 come的相關(guān)詞匯填空1. When did the world _? 2. The new seat-belt regulations _ last week. 3. When did this word _?Keys: 1. come into being2. came into effect 3. come into use知識點5：重點句子1. She turned around and there was an antelop

20、e with a sad face looking at her.她轉(zhuǎn)過身看到一只羚羊帶著憂郁的神色望著她。解釋此句可改成：She turned around and there was an antelope which was looking at her with a sad face.“with a sad face looking at her 為with的復(fù)合構(gòu)造，即with +名詞、代詞介詞賓語+v.-ing賓補(bǔ)。可充當(dāng)賓補(bǔ)的還有分詞、不定式、形容詞、副詞及介詞短語。簡單總結(jié)為：with +賓語+-v.-ed /v.-ing /to do作伴隨狀語或定語典例With some s

21、tudents following behind, he came in.練習(xí) 中譯英1. 站著的時候不要把手插在口袋里。_2. 新老板很擔(dān)憂，因為有很多事要處理。_Keys:1. Don't stand with your hands in your pockets.2. With a lot of thing to be solved, the new boss worried a lot.2. They set the number of animals to be hunted. 他們撥出一定數(shù)量的動物供人們捕獵。解釋to be hunted為動詞不定式的被動式，在此作anim

22、als的后置定語。不定式作定語時，在句中假如能找到不定式動作的執(zhí)行者，常用不定式的主動式，找不到時常用不定式的被動式。典例The first thing to be done is to tidy up the office.The first thing for you to do is to tidy up the office.練習(xí) 中譯英1. 在我們出發(fā)之前，這輛車必須修理一下。_2. 會議明天舉行。_Keys:1. The car needs to be repaired before we start.2. The meeting is to be held tomorrow.四、

23、例題精析【例題1】根據(jù)課文內(nèi)容完成下面語法填空，注意單詞拼寫和詞語用法：Daisy desired to help 1 endanger species of wildlife because a large number of animals are dying 2 . One day, a flying carpet took her to a 3 遙遠(yuǎn) land, 4 she could find antelopes 5 gave fur to make sweaters. Then she met an elephant in Zimbabwe and was told that el

24、ephants used to be hunted without 6 . But now people know the 7 重要 of wildlife 8 protect.答案：1. endangered2. out3. distant4. where5. that/which【例題2】閱讀課文，試著用30個單詞概括課文大意，再比較答案文章講述了Daisy的經(jīng)歷。她到西藏，津巴布韋和熱帶雨林游覽，在那她發(fā)現(xiàn)一些動物瀕意識到臨滅絕，由此她保護(hù)動物的重要性。 The passage tells us _答案：The passage tells us Daisys experience . She visited Tibet, Zimbabwe and a rainforest, where she found that some animals are in danger and realized the importance of protecting animals. 五、課堂運用【根底】1. 【原句】Please take me to