高一英语必修二第四单元知识点

1、.必修二第四单元适用学科英语适用年级高一适用区域人教版教材课时时长分钟2课时知识点本单元重点单词本单元重点词组本单元重点句子教学目的知识：1、掌握本单元重点单词。2、掌握本单元重点词组。3、掌握本单元重点句子。方法：结合实例，掌握单词的用法教学重点词语辨析1. contain / include 2. reserve / keep / preserve3. reduce / decrease4. fierce / wild / violent词形变化1. power n. 才能powerful adj. 强有力的; 力量大的powerfully adv. 强有力地; 力量大地2. apprec

2、iate v. 理解并欣赏; 赏识; 高度评价appreciation n. 欣赏; 感谢 appreciative adj. 有欣赏力的; 表示赏识的; 感谢的3. succeed v. 成功; 做成; 到达目的 success n. 成功; 成就; 成名; 发财; 成功; 到达目的successful adj. 获得成功的; 获得成效的; 到达目的的重点单词1. wild adj. 野生的, 野的, 未驯化的；无居民的, 荒凉的2. die out指物种死光；灭绝, 火渐渐熄灭3. hunt vt. & vi. 打猎; 猎取; 搜索4. distant n. 空间或时间远隔的, 遥

3、远的5. mercy n. 仁慈; 宽恕; 宽容; 恩惠; 幸运重点词组1. pay attention to 注意2. die out指物种死光；灭绝, 火渐渐熄灭3. come into being形成；产生不可用于被动语态或进展时态重点句子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.教学难点1、单词，短语正确使用2、单词短语辨义的考点及易错点教学过程一、课程导入 本单元我们将在原有知识

4、的根底上学习新的单词和词组，扩大词汇量和知识面，进一步进步英语程度。英语学习需要从“听说读写各个方面着手，进步整体运用才能。二、复习预习老师引导学生复习上节课所学的知识点， 以提问、回忆的形式进展，针对上节课的作业进展讲评、订正、答疑三、知识讲解知识点1：词语辨析【考察点】词形变化1. power n. 才能powerful adj. 强有力的; 力量大的powerfully adv. 强有力地; 力量大地2. appreciate v. 理解并欣赏; 赏识; 高度评价appreciation n. 欣赏; 感谢 appreciative adj. 有欣赏力的; 表示赏识的; 感谢的3. su

5、cceed v.  成功; 做成; 到达目的 success  n.  成功; 成就; 成名; 发财; 成功; 到达目的successful adj.  获得成功的; 获得成效的; 到达目的的【练习】用括号内所提供词的适当形式填空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知识点2：词语辨析1.

7、contain / include【解释】contain强调主语含有某种成分或装有某物。如：include强调主语包含的人或物是主语的一部分。所以include常译为“包括。including“包括,是非常常见的表达形式。【练习】用上面所提供的辨析词的适当形式填空1. The list _ his name.2. Beer _ alcohol.Keys: 1. included2. contains 2. reserve / keep / preserve【解释】reserve 正式用词，指为了将来的用处或其他用处而保存、保存。keep 最常用词，指长时间结实地保持合伙保存。preserve

8、主要指为防止损害、变质等而保存。【练习】用上面所提供的辨析词的适当形式填空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【解释】reduce 强调在“数量、大小，程度或强度方面下降或减少。decrease 侧重强调“稳定地，逐渐地，不断地减少【练习】用

9、上面所提供的辨析词的适当形式填空1. The workers _ their wage demands.2. Lack of success _ confidence.Keys: 1. reduced2. decreased4. fierce / wild / violent【解释】fierce 指人或兽的凶猛残酷。wild 既可指自然界的荒芜，未被驯化状态，又指人的无法无天，不文明的野蛮行为。violent 指人时侧重极为不安、异常冲动，暗含有暴力行为；也指破坏性的或不可控制的自然力量。【练习】用上面所提供的辨析词的适当形式填空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知识点3：重点词汇1. wild adj. 野生的, 野的, 未驯化的；无居民的, 荒凉的典例 1. He enjoys filming wild animals. 他喜欢拍摄野生动物。2. We walked into a wild mountain region. 我们走进荒无人烟的山区。重点用法be wild about sth/sb对某事物某人极热心或热爱be wild w

11、ith 因而发狂练习 中译英1. 群众欣喜假设狂。_2. 孩子们都特别喜欢这个新计算机。_Keys: 1. The crowd went wild with delight.2. The children are wild about the new computer.2. relief n. 痛苦 困苦 忧虑等的减轻或解除典例 1. The drug gives some relief from pain. 这种药可以减轻一些痛苦。2. I breathed/heaved a sigh of relief when I heard he was safe. 我听到他平安的消息时才松了一口气。

12、重点用法much to ones relief 使某人大为放心；使某人深感宽慰练习 中译英1. 我最庆幸的是没有迟到。_2. 见到你在这儿也就放心了。_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. 打猎; 猎取; 搜索典例 1. Wolves hunt in packs. 狼是成群猎食的。2. Police are hunting an escaped criminal. 警方

13、正在追捕逃犯。重点用法hunt for 试图找到某物某人hunt after 探求；追求练习 中译英1. 我在寻找一本失去的书。2. 许多人一生追求成名，但一无所获。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. 空间或时间远隔的, 遥远的典例 1. The airport is about ten miles distant from the city. 机场间隔 城市大约十英里远。2. She is a d

14、istant cousin of mine. 她是我的远房表妹。重点用法be distant with / towards with sb. 对冷淡练习 中译英1. 这两种学说之间没有什么关联。_2. 她对妈妈总是很冷淡。_Keys: 1. There is a distant connection between the two theories. 2. She is always distant with her mother.5. mercy n. 仁慈; 宽恕; 宽容; 恩惠; 幸运典例 1. They showed mercy to their enemies. 他们对敌人很仁慈。2

15、. It's a mercy she wasn't hurt in the accident. 她在事故中未受伤, 真幸运。重点用法at the mercy of sb/sth任由某人某事物摆布或控制have mercy on / upon对有怜悯心练习 中译英1. 那只船在暴风雨中失去控制_2. 可怜可怜我们吧。_Keys: 1. The ship was at the mercy of the storm.2. Have mercy on us!知识点4：重点词组 1. pay attention to 注意典例 1. Please pay attention to wha

16、t I am saying. 请注意我说的话。2. She turned her attention to a new problem. 她把注意力转移到一个新问题上。短语归纳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 练习 中译英1. 报纸的大标题引起他的注意。_2. 她要我注意报告中的一处错误。_Keys: 1. A newspaper headline caught his attention. 2. She drew my attention to

17、an error in the report.2. die out指物种死光；灭绝, 火渐渐熄灭典例 1. The moth's habitat is being destroyed and it has nearly died out. 这种蛾子因栖息地正受到破坏, 几乎绝种了。短语归纳die away减弱以致觉察不到；淡化die down逐渐降低；减弱be dying 垂死的be dying for/to do sth.渴望die of 死于饥饿；病die from死于外界引起的die hard很难改变；顽固练习 用die 构成的词组填空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；产生不可用于被动语态或进展时态典例Dinosaurs lived on the earth tens of millions of years ago, long before humans came into being.千百万年前，恐龙就

19、在地球上生活，比人类的出现要早得多。短语归纳come into effect施行come into use投入使用come into power上台执政练习用 come的相关词汇填空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知识点5：重点句子1. She turned around and there was an antelop

20、e with a sad face looking at her.她转过身看到一只羚羊带着忧郁的神色望着她。解释此句可改成：She turned around and there was an antelope which was looking at her with a sad face.“with a sad face looking at her 为with的复合构造，即with +名词、代词介词宾语+v.-ing宾补。可充当宾补的还有分词、不定式、形容词、副词及介词短语。简单总结为：with +宾语+-v.-ed /v.-ing /to do作伴随状语或定语典例With some s

21、tudents following behind, he came in.练习 中译英1. 站着的时候不要把手插在口袋里。_2. 新老板很担忧，因为有很多事要处理。_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. 他们拨出一定数量的动物供人们捕猎。解释to be hunted为动词不定式的被动式，在此作anim

22、als的后置定语。不定式作定语时，在句中假如能找到不定式动作的执行者，常用不定式的主动式，找不到时常用不定式的被动式。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.练习 中译英1. 在我们出发之前，这辆车必须修理一下。_2. 会议明天举行。_Keys:1. The car needs to be repaired before we start.2. The meeting is to be held tomorrow.四、

23、例题精析【例题1】根据课文内容完成下面语法填空，注意单词拼写和词语用法：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 遥远 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【例题2】阅读课文，试着用30个单词概括课文大意，再比较答案文章讲述了Daisy的经历。她到西藏，津巴布韦和热带雨林游览，在那她发现一些动物濒意识到临灭绝，由此她保护动物的重要性。 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、课堂运用【根底】1. 【原句】Please take me to