2019-2020学年高中英语人教版必修三Unit4单元知识点讲解与练习
2019-2020学年高中英语人教版必修三Unit 4 Astronomy: the science of the stars 语言要点（模块）Ⅰ.词语辨析Ⅲ.重点词汇1. system n.[c] 系统；体系；制度；方法systematic adj 有系统的; 有条理的[典例]1). The solar system includes the sun and its eight planets. 太阳系包括太阳和它的八颗行星。
2). Alcohol is bad for your system. 喝酒对身体有害。
[练习] 根据句子的意思完成句子。
1). The ______ ______ (教育系统) operates very differently in the US and China.2). He introduced us a well-designed ______ ______ (铁路系统).Keys: 1). educational system 2). railway system2. lay vt. (laid, laid, laying) 把放下；摆设；铺(地毯) ；产(蛋)[典例]1). He laid his hand on my shoulder. 他把手放在我的肩上。
2). Who should we lay the blame on? 我们该责备谁?[重点用法] lay短语：lay eggs 下蛋lay sth. aside 把某物放在一边；积蓄（钱）lay sth. down 把某物放下lay the blame on sb.责备某人lay the table 摆桌子lay emphasis / stress on sth. 把重点放在某事上[练习] 根据句子的意思在括号里填入适当的词或翻译。
1). The bird ______ its eggs in other birds’ nests.2). He is a political leader that _____ _____ _____ _____ (非常强调) individual responsibility.3). He ______ some money ______ for rainy days.Keys: 1). lays 2). lays great stress on 3). lays/puts; aside3. harmful adj. 有害的；伤害的harm n.&vt. 伤害（某人）[典例]Many people are aware of the harmful effects of smoking. 很多人都意识到吸烟的危害。
[重点用法]be harmful to sb./sth. 对……有害do harm to sb.= do sb. harm = harm sb. 对……有害；伤害……[练习] 根据句子的意思在括号里填入适当的词或翻译。
1). Everyone knows that smoking is ______ to your health.2). In many cases, too much care for children from parents might even do ______ to their growth.3). 在阳光下看书对你的眼睛伤害很大。
_______________________________________________________________________________ Keys: 1). harmful 2). harm 3). Reading in the sun does a lot of harm to your eyes. = Reading in the sun does your eyes a lot of harm.= Reading in the sun is very harmful to your eyes.4. exist vi. 存在；生存existence n. 存在[典例]1). Does life exist on Mars? 火星上有生命吗?2). I can har dly exist on the wage I’ m getting. 我靠我挣的工资简直难以餬口。
[重点用法]exist + prep. 存在于地方exist on sth. 靠某物生存[练习] 用exist的短语或其适当形式填空。
1). This plant ______ only ______ Australia.2). Can you ______ ______ such a low salary?3). I doubt the ______ (exist) of alien.Keys: 1). exists; in 2). exist on to 3). existence5. puzzle vt.&vi. (使)迷惑；(使)苦思n.谜；难题puzzled adj.无法了解的；困惑的puzzling adj.令人费解的[典例]1). Her reply puzzled me. 她的回答把我弄糊涂了。
2). Their reason for doing it is still a puzzle to me. 他们为什麽要做此事我仍莫名其妙。
[重点用法]sth. puzzles sb. 某事使某人迷惑/为难sb. be puzzled by sth. 某人对……感到迷惑puzzle about/over sth. 对某事感到迷惑或苦苦思索（以便理解）solve a puzzle 解决一个难题[练习] 用puzzle的适当形式填空或翻译。
1). To explain the ________ (puzzle) findings, he offers two theories.2). I _______ (puzzle) that I haven’ t heard from Liz for so long.3). She listened with a _______ (puzzle) expression on her face.4). No one has yet succeeded in explaining the _______ (puzzle) of how life began.5). He _______ (puzzle) what to do next.6). _______ _______ _______ (使我困惑的事情) is why he left the country without tellinganyone.Keys: 1). puzzling 2). am puzzled 3). puzzled 4). puzzle 5) was puzzled 6). What puzzles me6. pull v.拉，拖，拔；移动n.拉，拖；拉(引)力[典例]1). You push and I’ ll pull. 你来推，我来拉。
2). I felt a pull at my sleeve and turned round. 我觉得有人扯我的袖子，便转过身来。
[重点用法]pull ahead (of sb/sth) 领先（於某人/物）pull (sb) back（使某人）退却；撤回（某人）pull off (sth)（指机动车辆）驶离（道路）（至路侧停车处停下）pull out (sth.) 拉掉；使分离；掏出；驶离（车站）pull on 穿，戴上（袜子、手套等）pull together 同心协力；通力合作[练习] 用pull短语的适当形式填空。
1). I arrived as the last train was ______ ______.2). He ______ ______ a gun and aimed at the criminal.3). So long as we ______ ______, there’ s no mountain top we can’t conquer.Keys: 1). pulling out 2). pulled out 3). pull together7. cheer vt. & vi. (使)高兴、振奋；(对)欢呼cheerful adj.高兴的cheerless adj.不高兴的[典例]1). The crowd cheered loudly as the Queen appeared. 女王出现时群众高声欢呼。
2). He was greatly cheered by the news. 他听到这个消息非常高兴。
[重点用法]cheer sb. on为某人加油cheer (sb) up（使某人）更高兴或更快活[练习] 用cheer的短语或其适当形式填空。
1). Your visit has greatly ______ him up.2). The crowd ______ the runners ______ as they started the last lap.3). You look as though you need ______ up.Keys: 1). cheered 2). cheered; on 3). cheeringⅣ.重点词组1. to begin with = to start with 以……开始；由……作为开头；首先[典例]To begin/start with, I couldn’ t understand a single word. 起初，我一句也没弄明白。
[重点用法]begin/start with 从……开始begin/start sth with 从……开始……[练习] 根据句子的意思完成句子。
1). He ______ his speech ______ a poem.2). His speech ______ ______ a poem.3). ______ ______ ______, pets are good friends of many lonely people, especially the old. Keys: 1). began/started; with 2). began/started with 3). To start/begin with2. in time 及时；最终；迟早[典例]1). They caught the bus in time. 他们及时赶上了汽车。
2020-2021学年高二上学期英语人教版(2019)选择性必修第三册 UNIT 4 教学知识细解码
8． cruel adj. 残酷的；残忍的；冷酷的→cruelty n．残酷；残 忍
9．furnish vt.布置家具→furnished adj.配备好家具的→ furniture n. 家具
[知识拓展] (1)belonging n. a sense of belonging (2)belong to sb. belong to sth.
归属 归属感 属于某人，归某人所有 是(俱乐部、组织等)的成员， 是(某族类或纲目)的一部分
[即学即练] 单句语法填空 ①As parents we have a responsibility to give our children a sense of belonging (belong)． ②They belonged to a younger generation.
[小片段助记] Thirty years ago，Mrs. White picked up an abandoned baby in a hospital. As the boy grew up，he abandoned himself to computer games. What's worse，he took up drugs and spent all the money. In order not to support Mrs. White who was too old to earn money，he even abandoned the old lady.
(2)qualified adj. 符合资格；具备……的知识(或技能、学历等) [例 1] The government has given qualified support to the idea. 政府对这一想法给予了适当的支持。 [例 2] Demand has far outstripped supply of qualified teachers. 对有资格教师的需求远远超过了供应。 [造句] 这位女士最适合做这项工作。
2019-2020学年高中英语人教版必修三Unit4必背单词短语句型
2019-2020学年高中英语人教版必修三Unit 4 Astronomy: the science of the stars一单词拼写(根据汉语提示写出下列单词)1. We have established socialist system（制度）.2. He doesn’t believe in religion（宗教）.3. It is so in theory (理论), but not in practice.4. The struggle became more and more violent (激烈的).5. Fresh air is fundamental (基础的, 基本的) to good health.6. Fruit juices can be harmful (有害的）to children’s teeth.7. Water consists of hydrogen and oxygen (氧气).8. Salt exists（存在）mostly in sea water.9. The stone rolled down the hill by gravity (引力).10. A biologist（生物学家）is mainly studying biology.11. He is a gentle（温和的, 文雅的）person, and we all consider him as a gentleman.12. Physicists（物理学家）are still interested in magnetism (磁力).13. He pulled（拉）the door open and rushed out.14. There are two spacemen in the spaceship (宇宙飞船).15. He found something floating (漂浮) on the lake, which frightened him.16. He cheered (振奋) up at the thought of buying a new car.二选词填空(注意所选词或短语的正确形式)Prevent --- from; chain; exist; give birth to; lay; fundamental; unlike; multiply;in one’s turn; in time1. It’s unlikely that the thieves will be caught.2. If you hurry, you’ll be in time for the bus.3. There are fundamental differences between your religious beliefs and mine.4. He is chained to his work, so he seldom has time to go out to play.5. Hot weather multiplied the bacteria(细菌)in the food rapidly.6. The waiter has laid the table, so we can sit around it.7. After the “Big Bang”, the universe came into existence .8. Mrs. White gave birth to a fine healthy baby in her late thirties.9. The purpose of the safety belt is to prevent the drivers from being injured when an accident happens.10. The coach will, in his turn, teach these students how to drive a car.三必会短语1. solar system 太阳系2. origin of life 生命起源3. a widely accepted theory 普遍为人们所接受的理论4. begin with 以...为起点，开始（做）...5. a cloud of dust 一团尘埃6. explode loudly 猛烈爆炸7. in time 及时，最终from time to time 不时, 偶尔, 间或,有时for the time being 目前，暂时for the first time __________ at the same time ________________8. water vapor 水蒸汽9. the earth's atmosphere 地球的大气层10. cool down 冷却11. on its surface 在它的表面12. be fundamental to the development of life 对生命的发展起关键作用13. the continued presence of water 长期有水存在14. chain reactions 一系列的反应15. millions of years later 几万年以后16. fill... with 充满17. encourage the development of…为......的进化创造条件18. live on land 在陆地上生活19. live in the water 在水里生存20. produce young 生出幼仔21. lay eggs 下蛋22. all life forms in the past 以往所有的生物形式23. give birth to 生产；分娩24. spread all over the earth 遍布各地25. in one’s turn轮到某人，接着26. carbon dioxide 二氧化碳27. prevent…from doing sth.防止…做…stop... (from) doing sth. 阻止…做…keep...from doing sth.28. millions of years to come 在未来的数百万年中29. depend on 取决于30. make a trip 去旅行,31. in the spaceship 在太空飞船中32. explain to…向……解释……33. on the journey 在旅程中34. get cl ose to…接近……35. cheer up 高兴起来cheer sb. 让某人高兴起来36. float weightlessly around 失重飘来飘去37. in the spaceship cabin 太空船舱38. climb down the steps 从梯级上爬下来39. step forward 向前迈步40. fall over 摔倒41. now that... 既然42. get the hang of…掌握了……的诀窍43. leave the moon‘s gravity摆脱月球引力44. break out 突然发生, 爆发四语法填空（请选用恰当的词填空:which, what, it, that, whether, why, whoever, who, when, where）1. Who was responsible for the accident is not yet clear.2. It is clear that he has no money with him.3. Whether it is true remains a problem.4. What he wants to buy is a toy.5. Whoever breaks the law is sure to be punished.6. When they will have the sports meet is still a question, for they have so many things to do.7. Where they will talk about the matter won’t make too much difference. In fact, it is the attitude not the place that matters.8. It is reported that the actress will come to Shanghai for her next play.9. Why he didn’t come yesterday is unknown.10. Which kinds of books they will buy needs considering.五完成句子1. What he said (他所说的)made everyone smile.2. Why he did it（他为什么做这件事）remains a mystery.3. It is believed （人们相信）that at least a score of buildings were damaged or destroyed.4. It is important that she should finish（完成）the work today.5. Whatever was said（不管说什么）here must be kept secret.六必背句子1. In our solar system eight planets circle around the sun.在我们的太阳系中，有八个行星围绕太阳运转。
2019-2020学年高中英语人教版必修三Unit4 单元复习导学案
2019-2020学年高中英语人教版必修三Unit 4 Astronomy: the science of the stars一、复习目标：帮助学生巩固和强化运用本单元重点单词、短语、句型和语法二、复习重点、难点：重点词汇：exist puzzle now that break outin time prevent/stop/keep...from重点句型:It is obvious that... 显然make it+adj.+for sb.to do使某人做某事……语法：主语从句三、复习过程（精讲精练）1.exist vi存在；生存，生活，继续存在exist in 存在于……中 exist on=live on 靠……生活exist as 作为……而存在，以……形态存在派生：existence n.存在 existent adj.存在的随时练用适当的词填空或用所给词的适当形式填空。
⑴They cannot exist ______ the money he’s earning. ( on )⑵ Matter can exist __ a solid，liquid，or gas.( as )⑶We can’t exist without water.That means our ___________ (exist) depends on water. ( existence )2.puzzle n.迷；难题 v.(使)迷惑；(使)为难be puzzled by被……迷惑 be in a puzzle(about)(对……)不知如何是好派生：puzzling adj. 令人困惑的 puzzled adj.(人感到)困惑的随时练用适当的词填空或根据提示完成句子。
⑴ Her decision was a puzzle ____ him. ( to )⑵ His recent behavior ______________ (使我迷惑不解). ( puzzles me )⑶ His answer sounds ________(puzzle) and we are all___________ (puzzle).( puzzling , puzzled )3. in time【点拨】in time 意为“来得及；赶得上；最终”，往往是用在刚刚赶上某事情的发生且再晚点就来不及的情况；。
精选2019-2020年高中英语必修3、4Unit 4 Astronomy the science of the stars人教版习题精选第五十篇
精选2019-2020年高中英语必修3、4Unit 4 Astronomy the science of the stars人教版习题精选第五十篇第1题【单选题】You’d better stop drinking wine too much, for it will the risk of blood disease.A、multiplyB、occupyC、takeD、achieve【答案】：【解析】：第2题【单选题】Some experts have indicated that a kind of disease will this winter.A、break downB、break outC、break upD、break off【答案】：【解析】：第3题【单选题】The driver in front of us at the red light and we stopped behind him.A、put offB、pulled upC、got overD、put up【答案】：【解析】：第4题【单选题】Simo n was why many of his friends didn’t turn up at his birthday party.A、limitedB、crashedC、spottedD、puzzled【答案】：【解析】：第5题【阅读理解】阅读理解Both are so much related to each other. And both are so dissimilar! What are the differences between friendship and love? Is platonic (理想的) friendship possible between persons of opposite sex? Let us try and understand.What is friendship? Why do we call a person our friend? When do we call someone a very good friend? If we care for a person, if we are always ready to help that person and if we share most of our thoughts with a person, they are our good friends. We can always count upon our good friends in an emergency. We are always sure that our friend will understand why we acted in a certain way. We need not explain anything to our very good friends. The friendship is so deep and the relationship is so close.What about love? In a relationship of deep love, all the sharing that we discussed above are taken for granted. But love transcends (胜过) all this. During love, we are attached with a particular person, while in friendship, one may have many friends. A loving relationship makes one so much attached to the other, thatone gets pained if his/her beloved is hurt! Love also involves a physical element. Friendship does not have that. This is a vital difference. Nature gives us love but does not give us friendship.Your heart beats will never increase in expectation of meeting your friend. You will not lie awake at night thinking about your friend. You will not feel totally lost, if you don"t meet your friend for a few days. You will not have dreams in your eyes thinking about your friend. But in love, you will do all this and much more. Indeed, there is no comparison between love and friendship.What"s the function of the first passage?A、To come up with the question for the further discussion.B、To explain the main idea of the following passage.C、To tell us the whole meaning of the passage.D、To advise us to make friends in different way.How do you do to make real friends?A、You should give others your everything.B、You should share, help and understand each other.C、You should have the same interests in everything.D、Friend in need is a friend indeed.If you are friends, you"ll ________.A、dream of him at night.B、lie awake at night and think your friend.C、feel you don"t meet him for a long time.D、You don"t feel excited meeting your friend.The writer gives us the article to ________.A、tell us the meaning of love and friendship.B、tell us relationship between friends and relatives.C、tell us the difference between love and friendship.D、tell us how to get friendship and love.【答案】：【解析】：第6题【翻译】半夜发生了火灾，幸运的是很快就被不灭了。
2019-2020学年人教版英语必修三新素养同步讲义：Unit 4 Astronomy Section Ⅳ Grammar Word版含答案
Section ⅣGrammar名词性从句——主语从句1．(教材P25)What it was to become was uncertain until between 4.5 and 3.8 billion years ago when the dust settled into a solid globe.2．(教材P25)The earth became so violent that it was not clear whether the shape would last or not. 3．(教材P26)What is even more important is that as the earth cooled down, water began to appear on its surface.4．(教材P26)It was not immediately obvious that water was to be fundamental to the development of life.5．(教材P26)What many scientists believe is that the continued presence of water allowed the earth to dissolve harmful gases and acids into the oceans and seas.6．(教材P26)So whether life will continue on the earth for millions of years to come will depend on whether this problem can be solved.定义在主从复合句中，充当主语的从句叫做主语从句。
◆How the earth came into existence remains a mystery to us.地球是如何形成的对我们来说仍然是一个谜。
Unit 4 Adversity and Courage高中英语人教版(2019)选择性必修第三册
aboard
• adv
• 上船/车/飞机(on board)
• prep
• 在船/车/飞机上;上船/车/飞机
cupboard
•n
• [C]碗柜;橱柜
assign
• vt
• 分配;分派
• assign sb to do sth委派某人去做某事
• 【同根词】
• assignment n.作业，任务；（工作等的）分配，指派
• 【同根词】
• perseverance n不屈不挠，坚持不懈
resolve
•v
• [正式]
• ①vt解决(=settle)
• resolve a conflict解决冲突
• ②vt&vi [正式用语]决心;决定
• 【同根词】
• resolution n[C]&[U]解决;决心
• New Year's resolutions新年的决心
sink
•v
• (sank, sunk)
• ①vi&vt(使)下沉; (使)沉没【反float】 • ②vi(高度)下降;倒下;坐下 • ③vi消沉;陷入;降低;减弱
• be sank in ...陷入...中
•n
• [C]面盆;洗碗池
abandon
• vt
• ①放弃（某物） • ②遗弃（某人） • ③离弃（某地/某交通工具）
navy
•n
• [C]海军;海军部队
• join the navy参加海军
decent
• adj
• 正派的;得体的;相当好的
cosy
• adj
• 暖和舒适的,感觉舒服的
selfish
Unit 4 单词扫雷讲解 课件-高中英语人教版(2019)必修第三册
你知不知道一些关于挑选宇航员的步骤的知识？
astronaut
D_o__y_o_u_k_n_o_w__a_n_y_t_h_in_g__a_b_o_u_t_t_h_e_s_e_le_c_t_io_n__p_r_o_c_e_d_u_re__fo_r__a_st_r_o_n_a_u_ts_?________
18.
adv.独立地
independent adj.独立的;自立的
independence n. 独立;自立
depend vi. 依靠;依赖
depend on sb=rely on sb依靠
Translation: 在2003年，中国成为世界上第三个独立自主把人类送入太空的 国家。
_C_h_i_n_a_b_e_c_a_m_e__th__e_t_h_ir_d_c_o_u_n_t_r_y_in__t_h_e_w__o_rl_d_t_o_i_n_d_e_p_e_n_d_e_n_t_ly__se_n_d__h_u_m__a_n_s__
disappointment n.失望
disappointing adj.令人失望的
be disappointed at/by sth 对某事感到失望
to one’s disappointment 让某人失望的是
14.
n.渴望 vt.渴望 (优化设计P93)
desirable adj.理想的，值得做的
Translation:这是因为人们坚信太空探索的重要性，哪怕面临巨大的风险。
_T_h_is__is_b_e_c_a_u_s_e__p_e_o_p_le__b_e_li_ev_e__in__th_e__im__p_o_r_ta_n_c_e__o_f_c_a_rr_y_in_g__o_n_s_p_a_c_e_____
【最新推荐】2019-2020学年人教版高中英语必修三课时规范训练：Unit 4 Astronomy the science of the stars
Unit 4 Period 3 Ⅰ.语法基础 A．用适当的连词填空 1．________was responsible for the accident is not yet clear. 2．It is clear________he has no money with him. 3．________it is true remains a problem. 4．________he wants to buy is a toy. 5．________breaks the law is sure to be punished. 6．________they will have the sports meet is still a question，for they have so many things to do. 7．________they will talk about the matter won’t make too much difference.In fact，it is the attitude not the place that matters. 8．________is reported that the actress will come to Shanghai for her next play. 9．________he didn’t come yesterday is unknown. 10．________kind of books they will buy needs considering. 【答案】1.Who 2.that 3.Whether 4.What 5.Whoever 6．When 7.Where 8.It 9.Why 10.Which B．句型转换 1．It is said that AIDS is the biggest health challenge to both men and women in that area in the past few years. AIDS is said________________the biggest health challenge to both men and women in that area in the past few years. 2．It is known to all that the moon travels round the earth once every month. ________________________to all，the moon travels round the earth once every month. 3．I wonder how they can improve their English in a short time. I don’t know________ ________have their English improved in a short time. 4．“What a pity！”she said. She said it________________________. 5．Jenny didn’t realize she had lost her keys until she got home. It was________________Jenny got home ________ she realized she had lost her keys. 【答案】1.to be 2.As is known 3.how to 4．was a pity 5.not until；that C．单句语法填空 1．—I get at least half an hour of exercise almost every day. —Oh great! Keep________up. 2．Since the house price in the city may be ________high as we can’t imagine, I suggest that we rent an apartment to live in first. 3．—I’m thinking of the test tomorrow. I’m afraid I can’t pass this time. —Cheer________！ I’m sure you’ll make it. 4．As soon as the fire broke________， it spread quickly. 5．All the visitors were told to watch________for those dangerous animals while visiting the zoo. 6．In order to block ________the sunshine, the students had many books piled high. 【答案】1.it 2.as 3.up 4.out 5.out 6.out D．根据汉语提示完成句子 1．The police ________ ________ ________ ________ after the explosion. 在爆炸发生之后，警方封锁了那条路。 2．A big flood ________ ________ in his hometown last year. 去年他的家乡发生了一场洪水。 3．________ ________you have made mistakes, you should be punished. 既然你已犯了错，就应该受到惩罚。 4．The driver ________ ________ at the red light. 司机在红灯前把车停下。 5．His teammates ________________ as soon as they knew he had recovered from illness. 一听说他恢复了健康，他的队友高兴起来。 6．Cats sleep________ ________ ________ ________ people. 猫的睡眠时间是人的两倍。 7．A big truck was out of control and ________________________the back of a car. 一辆大卡车失去了控制，撞上了一辆汽车的尾部。 8．In the darkness, they were frightened to notice something strange ________ ________ ________ ________. 在黑暗中，他们惊恐地注意到有奇怪的东西在空中飘浮着。 【答案】1.blocked up the street 2.broke out 3．Now that 4.pulled up 5.cheered up 6．twice as much as 7.crashed into 8．floating in the sky Ⅱ.综合提升 A．语法填空 I had an impressive trip to the Huashan Mountain last summer vacation. The scenery of the mountain is so beautiful and so 1.________(difference) that even now, whenever I close my eyes, I feel the breathtaking scenery in front of 2.________(me) eyes. Although the mountain 3.________ (stand) just 2,100 meters tall, it’s known as one of the most difficult mountains to climb. There are cable cars(缆车) to take, but visitors are advised 4.________(go) up on foot. Only in this way can you see5.________special the rocks are and what danger you place yourself in. Climbers make their way along very narrow paths up the mountain，6.________(face) the deep cliff (悬崖), with the help of7.________iron chain. Every visitor is required to wear a safety belt，8.________makes sure that he can enjoy the fantastic view without fear of falling. Besides the9.________(nature) beauty, the Huashan Mountain is also known10.________its rich cultural relics. The way up to the mountain-top is also a trip to go over the Chinese history. If you have never been to such a great place, set it as a must in your calendar of this year! 【答案】1.different 2.my 3.stands 4.to go 5.how 6．facing 7.an 8.which 9.natural 10.for B.读后续写 阅读下面的短文，根据所给情节进行续写，使之构成一个完整的故事。 Alexis， 17， sat quickly in the passenger seat of her dad's car. She let her eyes lazily scan the landscape for wildlife. Then a deer came into view about 200 yards in front of them. “Dad， there's a deer there！” Alexis said， rolling down the window for a better look. It was a male deer with sharp antlers(鹿角) on each side of its head.
人教版新课标高中英语必修三unit4 知识总结和练习 无答案
Unit 4 Astronomy :the science of the star Lecture 1 words and phrases1.天文学大气层；氛围2.重力；万有引力系统3.链子；连锁碰撞4.（使）漂浮；浮动温和的5.阻止；制止对...迷惑不解6.熟悉；掌握突发；爆发7.分娩；产生轮到某人8.既然为...奠定基础9.产生；存在保护...免受...伤害10.苦苦思索 ...对某人来说仍是个谜11.摧毁康复；痊愈12.结果是为某人加油13.密切注视照看；看守14.警告某人当心某事15.警告某人做／不要做某事16.失去耐性/用尽力气17.exhaust one’s patience/strengthLecture 2 Key structures1.倍数的表达方式①倍数+ as + adj/adv + as②倍数+ adj/adv 比较级+ than③倍数+ the size/height/weight/depth...+ of④倍数+ as many/much + n +as2.it作为形式宾语的用法Obviously , it is the internet that makes it easy to communicate with each other. 句中it作形式宾语，真正的宾语是life to develop，possible作宾语补足语。
常用于此结构的词还有think，feel，find，consider等。
构成：He feels it his pleasure to help me ．我发现那让他们感到很高兴。
老师提高了嗓音以便于被别人听到。
3.“be to+动词原形”的用法(1)表示按计划或安排要做的事。
When are you to leave for home?你什么时候回家?(2)表示命中注定要发生的事。
He was to become a pianist after so many years of hard work ．这么多年的艰苦训练之后他注定会成为一个钢琴家。
2019-2020年高中英语人教版必修三unit4复习案及答案
1．adj.猛烈的；激烈的；强暴的→n．暴力→adv.猛烈地
2．prep.不同；不像→vt.不喜欢→adj./adv.相像，有可能
3．adj.有害的；伤害的→n．危害，害处→adj.无害的
4．n．谜；难题vt. & vi.(使)迷惑；(使)为难→adj.迷惑的→adj.令人迷惑的
5．n．质量；团；块；大量；(复)群众
●补充词汇短语
1．harmfuladj.有害的；伤害的harmn．&vt.损伤；伤害
harmlessadj.无害的harmlessnessn.无害
be harmful to对……有害b.对某人有害
do more harm than good弊大于利
There is(no) harm in (sb.‘s) doing sth.(某人)做某事有(无)害处。
A．Children learn to do all the other things in the same way．
But in school we never give a child a chance to find out his mistakes and correct them for himself．73we act as if we thought that he would never notice a mistake unless it was pointed out to him, or correct it unless he was made to．Let him work out, with the help of other children if he wants it, what this word says, what the answer is to that problem, whether this is a good way of saying or doing this or not．