高中英语必修二第四单元教案精华版

1、必修二Unit 4教案一.复习旧知灭绝动物大海牛于1768年灭绝；渡渡鸟 于1681年灭绝；恐鸟于 1800年左右灭绝；大海雀于1844年灭绝；开普（好望角）狮于1865年灭绝（生活最南端、 最大的狮子亚种）；阿特拉斯棕熊于1870年灭绝（唯一产于非洲的棕熊和熊类）；南极狼于1875年灭绝（生活在地球最南端的犬科）；美国缅因洲海鼬于1880年灭绝； 于20世纪90年代灭绝（区域性灭绝）；亚欧水貂于1997年左右灭绝.据世界红皮书统计，20世纪有110个种和亚种的哺乳动物以及139种和亚种的鸟类在地球上消失了。目前，世界上已有593种鸟、400多种兽、209种两栖爬行动物和20000多种高等植物

2、濒于灭绝。海牛目中已知体型最大的物种大海牛身长约7.5米，体重4,500至5,900公斤，可长到10.7米长7 / 7成年黑足雪貂平均体长 0.5米,高度可达3米（10英尺），重量约250公斤（ 550磅）尾长0.15米，体重约1公斤天蛾人（Mothman ）是一种不明的奇异生物，又名 黑天使，惟一的克星是上帝之网。可以隐形，此时只有同伴相互可见，雌体较雄体强壮，每一具雌体都是雄体的启蒙者。二.新课讲解1. As a result / as a result of 区另1Jas a result作为状语来用，强调结果。后面一般用逗号隔开。as a result of +名词（短语）/代词强调原

3、因，意义相当于because of.Eg: He worked hard at his study. As a result, he passed the exam easily.As a result of his hard work, he passed the exam easily.2. Die outdie from 一般指除了疾病、情感、饥寒以外的原因而造成的死亡，指死于外因die of (内部因素)情感、疾病、饥寒死因die for为而死，为而献身，表示因事业或目的而死。die out 种类灭绝Elephants would die out soon if men were al

4、lowed to shoot.逐渐消失 Many old customs are dying out.渐渐变小 The fire died out in the enddie away光、声音慢慢消失，风停下来He died from smoking/drinking He hid behind the door until the footsteps had died away3. Reservevt. 1).储备，保存;保留(+for)These seats are reserved for special guests.这些座位是为特别的来宾保留的。We will reserve the

5、 money; we may need it later.我们将把这笔钱存起来 ，也许以后用得着。2).预约，预订They have reserved rooms at a hotel.他们已预订了旅馆房间。1 have reserved a table at the restaurant.我已在饭店预订了一桌菜。n.1）.储备（物）;储备金;CU（+of）The old man kept a large reserve of firewood for cold weather. 这位老人贝士存了 大量的柴薪以备 天冷时用。2 ）.保留地保护区；禁猎区C3）.储备选手，候补C4.In peac

6、e / at war 处于战争状态in peace: 安静地，和平地，和睦地例句与用法:Please let me do my work in peace. 请让我安静地工作。rest In peace：指死后灵魂安息May his soul rest in peace! 愿他的灵魂祥和地安息！1.1 n danger 事物本身对别人没威胁，但事物本身出危险的环境下dangerous事物本身对别人有威胁，别人说这个事物是危险的e.g. We cannot find the kid. Its dark, she must be in danger now.小孩找不到了，天黑了，她处境危险。It

7、is dangerous to walk too near the edge of a cliff. 太走近悬崖边是危险的。danger表示“危险”，是不可数名词，表示“危险的人或物”，是可数名词。短语 out of danger 脱离危险on the danger list 病入膏肓endangered 濒临危险的6. Apply 动词 “申请 ”“ 应用 ”apply sth to sth /sb 是指把某物应用在某物/人上但是注意，因为这里的to 是做介词用，所以如果要在to 后面用动词，必须用动词的ing 形式。apply for 是申请的意思,是申请某职位，某证明,某奖学金等等app

8、ly for visa 申请签证apply for a position 申请职位I want to apply for the scholarship of this school.we can apply this new technology to our new product.例题 Look the nurse some medicinethe wound in the soldier s leg.A. applies ; at B. applied ; to C. is applying ; with D. is applying ; to答案 D Look 指 “看啊 ”，表示正

9、在发生，apply sth. to sth/sb. 固定用法,是指把某物应用在某物 /人上7. Suggest1) suggest doing sth.They suggested waiting until the proper time. 他们建议(我们)等到恰当的时机才行动.2) suggest thatShe suggested that the class meeting (should) not be held on Saturday.她建议班会不要在星期六举行.3) suggest sth. to sb. 有 提出的意思He suggested a different plan

10、to his boss. 他向老板提出了一个不同的计划.Xiao Wang suggested a way to solve the problem. 小王提出了一个解决这个问题的办法.4)有暗示、表明的意思.其主语往往是事物,而不是人. 接名词或动名词作宾语.The simple house suggested a modest income. 这座简朴的房子表明(房主的)收入并不高.Her pale face suggested bad health. 她脸色苍白,看来身体不好.The thought of summer suggests swimming. 一想到夏天就使人们联想到游泳8

11、. Protect .from 1) 、 prevent sb from doing sth 与 stop sb from doing sth 均为 “阻止某人做某事”用法相同，在主动语态中from 可以省略，被动语态中不行。2) 、 keep sb from doing sth 中的 from 无论在主动语态中还是在被动语态中都不能省略。你可以这样想一想，如果没有了from 就变成了keep sb doing sth 了，意思就反过来了。3)、protect frc/mgain表示 保护不受侵袭，挡住，防御。from后接能带来伤害或损害之物。Eg:1： You should protect

12、the children from catching cold. 你应该防备孩子们受凉。9. Containcontain: have or hold sth within itselfinclude: have sb/sth as part of a whole这样看来，contain, include的区别：者B有 包含的意思，included要强调被包含的东西本身是其一部分，而contain 则强调包含不属于本身的其他东西在里面。”例如：The parcel contained a dictionary. 那包裹里装的是一本字典。e.g. The health club includes

13、 a gym, swimming pool , and locker room.The pill contains vitamins. 这药丸中含有多种维生素。10. Affect词汇辨析affect, effect, influence ：1) affect常用作动词，意思是 对有影响”或 给带来变化”。例如： Does second hand smoke affect the health of all of us?2) effect 在大多数情况下都被用作名词，意为 “结果 ” 效果 “ ”； “作用 ”； “影响 ”： to affect sth.=tohave an effect o

14、n sth.例如： The drug did not affect the disease, and it had several adverse (不利的，反对的)sideeffects.一个简便的原则就是如果你需要一个动词的话，十之八九选用affect,如果需要一个名词，则通常使用effect.3) influence 指通过行动、榜样等对他人产生潜移默化的影响或作用，注重“影响 ”的结果。记忆形似词：effect n.影响； effortn.努力infect vt.医传染，感染。主要是指传染(病毒什么的)，一般不用在好事情上。考点提要in effect = in fact 实际上；tak

15、e effect = come into force 实施，生效；例题 Reading on bed A our eyes.A. has a bad effect on B .take a bad effect on C.has a bad effect to D. has a bad affect on have an effect on 对 .有影响11. Pay attention topay attention to doing. 注意，关心，留心。Draw/catch attention to. 使人们关注. ；e.g. The article was intended to dra

16、w attention to the situation in Cambodia. 这篇文章旨在呼吁人们关注柬埔寨局势。get down to doing类似的，devote one s time to doing12. Come into being 形成 ；产生We do not know when this world came into being. 我们不知道世界是何时形成的。三 . 课堂练习单项选择1. This disease has completely in this country.a. died out b. died down c. died away d. died

17、off2. Dark glasses are sometimes worn to the eyes from sunlight.a. prevent b. care c. defend d. protect3. Pine trees, of which there are almost one hundred , are found throughout the NorthTemperate Zone.a. species b. samples c. speciamens d. standards4. In the botanic garden we can find a(an) of pla

18、nts that range from tall trees to smallflowers.a. species b. group c. amount d. variety5. With the water in the lake rising, villages around are .a. in danger b. dangerous c. danger d. in dangerousb. Wouldn t you like some dumplings? Well, I d like to have a few. But, the bad ones last time, I dare

19、not.a. as a result b. as a result of c. as a matter of d. as far as7. Don t look at him. He is doing that to attract genera_l.a. word b. expression c. attention d. appearance8. The new law will come into on the day it is passed.a. effect b. use c. service d. existence9. He thinks that therapy( 治疗) t

20、he patient s health.a. cures b. effects c. treats d. affects10. I apologized to Mr Wang and made my with him.a. word b. peace c. promise d. mind五.家庭作业单项选择11. He suggested it in a different way.a. to do b. doing c. to be done d. done12. She suggested that Mike there at once.a. gone b. went c. go was

21、going13. His way of speaking suggested that he very angry.a. was b. were c. be d. should14. Her sun-tanned face excellent health.a. thinks b. thinks of c. suggests d. is suggested.15. As my grandfather felt better, his doctor him to take a holiday.a. advised b. considered c. hoped d. suggested16. I

22、to get up early, but forgot to set the alarm.a. intended b. advised c. suggested d. thought17. The results of this research can new developments in technology.a. be used by b. be applied to c. be made in d. be dealt with18. The belt in the car sometimes can you from traffic accident.a. care b. prevernt c. defend