2019-2020年高中英语人教版必修三Unit4Reading导学案(无答案)

1、2019-2020 学年高中英语人教版必修三unit4 astonomy: the science of the starshow life began on the earth 学案aims: 1. after reading, students be able to know some astronomic knowledet;2. students can grasp the main idea and the structure of the passage;.finish the exercise 2 on the book according to the questions ab

2、ove.iii. fill in the blanks in the following form.time what happenedbig bang _ began to form and combine to create stars and other bodies.3. improve students reading ability. part one:between 4.5 and 3.8 billion years agodust settled into a solid and _ globe.the earth exploded to produce its _.scann

3、ing:read the passage quickly and answer the questions.1. when did the “big bang” happen?1. what form was the earth after the “big bang”?2. what made up the earths atmosphere1. how did water come into being on the earth?1. whats the significance of the presence of water on the earth? 6.what was impor

4、tant to the development of fish?7. what made possible the rise of mammals on the earth?8. why are mammals different from all life forms in the past?many millions of years later many millions of years later the continued _ of water allowed the earth to dissolve harmful gases and _ into the oceans and

5、 seas.the first small plants on the surface of the water produced _. early _ and all sorts of fish appeared.green plants began to grow on land.insects and _ appeared._ appeared and they laid eggs.dinosaurs developed, laid eggs and _ for more than 140 million years.mammals rose and _ babies.detail re

6、adingi. read the passage carefully and match the main idea with each paragraph. para. 1 the formation (形成) of the earth.para. 2 the importance of water for life.para. 3 a widely accepted theory about the formation of the universe. para. 4 the arrival of humans and their impact on the earth.para. 5 t

7、he development of plants and animals on the earth.about 2.6 million years ago some small _ animals with hands and feet appeared and spread allover the earth.now humans produce too much carbon _, making the earth too hot.iv. true (t) or false (f).1. the earth appeared before the big bang happened.2.

8、the original atmosphere consisted of nitrogen and oxygen.3. the main difference between the earth and other planets is that there is water on the earth.4. life began in water and then on land.5. mammals appeared before the development of dinosaurs.6. dinosaurs could give birth to young baby animals

9、and produced milk to feed them.7. human beings produce too much carbon dioxide which causes the global warming on the earth. 8. according to the text, human beings would disappear in the end.post reading:speaking: what should we do for our earth?part two:phrases and useful expressions1. 及时；终于_ 2. 产生

10、；分娩 _3. 轮到某人_ 4. 阻止；制止_5.挡住（光线）_ 6. 感到高兴_7. 既然_ 8. 突发；爆发_9. 密切注视_ 10. 下蛋_11.依赖，取决于_ 12 向前迈步_13.和.一样痛苦_ 14.爆发_15.be different from_ 16. go round_17fillwith_ 18.as well as _19escape from_ 20.asas possible _21 make a trip _ 22.fall to the ground _23.fall back _ 24.get close to _part two. reading materi

11、als长句难句:把下列句子翻译成汉语。1. what it was to become was uncertain until between 4.5 and 3.8 billion years ago when the dust settledinto a solid globe._ 2. what is even more important is that as the earth cooled down, water began to appear on its surface. _2. what many scientist believe is that the continued presence of water allowed the earth to dissolveharmful gases and acids into the oceans and seas._4.why they suddenly disappeared still remains a mystery._5.so whether life wi