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1、必修三 Unit 4 Astronomy：the science of the stars,1. 课前自测 2. 课堂学案,课前自测,Key:1. religion; religious 2. violent; violence 3. globe; global; globalize 4. exist; existing; existence 5. harmful; harmless; harm 6. biology; biologist; biological 7. gentle; gently; gentleman,Key:8. break; breaker; broken 9. puzz
2、le; puzzling; puzzled 10. physicist; physics; physical; physician,8. _(vt. & vi. 打破；折断；弄坏 n. 破裂；间断)_(n. 破坏者；破碎机)_( adj. 破碎的；坏掉的) 9. _(n. 谜；难题 v. 为难；伤脑筋)_(adj. 费解的；令人困惑的)_(adj. 困惑的；糊涂的；茫然的) 10. _(n. 物理学家)_(n. 物理学；物理现象)_(adj. 身体的；物质的)_(n. 内科医生),Key:1. succeed 2. 冷却下来；平静下来 3. lay eggs 4. to 5. from bei
3、ng polluted 6. out 7. 感到高兴；感到振奋 8. 爆发一场打斗 9. of 10. watch out for,Key:1. What it was to become 2. so violent that 3. whether; whether 4. twice as far as 5. now that,Key:1. loudly 2. to produce 3. its 4. harmful 5. with 6. development 7. after 8. prevents 9. Whether 10. be solved,The earth was just a
4、 cloud of dust after the “Big Bang”. The earth exploded _1_ (loud) with fire and rock. They were in time _2_ (produce) many things, which were to make the earths atmosphere. As the earth cooled down, water began to appear on _3_ (it) surface. It allowed the earth to dissolve _4_ (harm) gases. The li
5、fe began to develop. The first small plants multiplied and filled the oceans and seas _5_ oxygen. This encouraged the _6_ (develop) of early shellfish and fish. Land animals such as insects, reptiles and dinosaurs and so on appeared _7_ green plants appeared. Small clever animals spread all over the
6、 earth. They are putting too much carbon dioxide into the atmosphere, which _8_ (prevent) heat from the earth into space. _9_ life will continue on the earth for millions of years to come will depend on whether this problem can _10_ (solve),课堂学案,【词块助记】,1. violent adj. 猛烈的；激烈的；强暴的,1. All in all, watc
7、hing the violent movies not only has bad effects on peoples mental health, but can also cause more hurts in our life. 总之，看暴力电影会影响人们的心理健康，同时在生活中也会带给我们更多的伤害。 2. A violent storm hit the city last night, which caused a lot of damage. 昨天夜里，暴风雨袭击了这座城市，造成重大损失。 3. Larry was in violent pain. As a result, he
8、behaved violently and treated everything with violence. 拉里处于极度痛苦之中，因此他表现得很粗暴，一切都以暴力对待。,a violent attack 猛烈的攻击 a violent storm 暴风骤雨 lay violent hands on 对使用暴力；对行凶 takeby violence 抢夺 with violence 猛烈地；强有力地,构词】violently adv. 猛烈地；凶狠地 violence n. 暴力；暴行,1. (广东卷改编)Anne says, “Kindness can build on itself a
9、s much as _ (violent) can.” 2. The storm came so violent that it ruined the whole crops. Key：1. violence 2. violent改为violently,【词块助记】,2. harmful adj. 有害的,1. What many scientists believe is that the continued presence of water allowed the earth to dissolve harmful gases and acids into the oceans and
10、seas. 很多科学家相信，由于地球上长期有水存在，使地球得以把有害气体和酸性物质溶解在海洋里。 2. Smoking can be harmful to your health. 吸烟会对你的健康有害。,be harmful to 对有害 be harmless to 对无害的 do harm todoharm 对有害 there is no harm in doing sth. 做某事无害处,【构词】harmless adj. 无害的；不致伤的 harm n. & vt. 损害；伤害；危害,1. (福建卷改编)Even if it contains evidence that wind f
11、arms are _ (harm), it will hardly be a pleasant surprise to people who dont like them. 2. There is no harm asking your teachers for advice on everything. Key：1. harmful 2. 在asking前加in,【词块助记】,3. exist vi. 存在；生存,exist in 存在于中 exist on 靠生活/生存 there exist(s) 存在；有 in existence 现存的；现有的 come into existence
12、 产生；成立；开始存在,1. The two sides have reached a partial agreement, but several differences still exist between them. 双方达成了部分协议，但他们之间仍存在着一些分歧。 2. (安徽卷)In my view, new architectural styles can exist perfectly well alongside an older style. 以我来看，新的建筑风格能够和旧的风格一起完美地存在。 3. They were so poor that they did not
13、live but merely existed. 他们穷得只能算生存，不能算生活。,1. (四川卷改编)Im lucky because I know my first homestill exist. 2. There exists dinosaurs on the earth a long time ago, but now they have died out. Key：1. exist改为exists 2. exists改为 existed,【词块助记】,4. puzzle n. 难题；谜 vt. & vi. (使)迷惑；(使)困惑,1. How life began on earth
14、 is one of the biggest puzzles that scientists found hard to solve. 地球上生命的起源是科学家们最难解答的问题之一。 2. What puzzled me was why they didnt take the experts advice. 使我不解的是他们为何不接受专家的忠告。 3. ( 天津卷)She gave me a hug and asked me to think about it. I was puzzled. 她给了我一个拥抱要我考虑这件事。我迷惑了。,be in a puzzle 感到困惑；不知如何是好 pu
15、zzle about/over 冥思苦想；苦苦思索 be puzzled about 对迷惑不解 be a puzzle to sb. 对某人来说是个谜 be in a puzzle about 对某事困惑不解,Her _ (puzzle) look showed that she was puzzled _ what he said.Yes. It was really _ puzzle because it was so _ (puzzle) that he would rather throw away the food than give it to those _ need.What he said as well as what he did _ (puzzle) all the people present. Key：puzzled; over/about; a; puzzling; in; puzzled,【词块助记】,5. pull n. & vt. 拉(力)；拖；牵引力,1. (四川卷) They wrapped one end of the rope around the block and pulled. 他们将石块绑缠在绳子的一端并用力扯绳子。 2. (全国卷)It was impossible for Joe to climb back or
