人教版必修三Unit 4 Astronomy：the science of stars Using Language学案 (2).doc

unit 4 astronomy：the science of stars using language学案learning target:words and expressionsexist, presence, telescope, disappoint, disappointed, publish, publishing, gravity, force, gradually, cheer, float, mass lessen, weightlessly, cabin, exhaust, exclaimsentence patterns1. when we get closer to the moon, we shall feel its gravity pulling us but it will not be as strong a pull as the earths.2. walking does need a bit of practice now that gravity has changed.3. we watched, amazed as fire broke out on the outside of the spaceship the earths gravity increased.4. seen from space, the earth appears to be a water ball.5. but the answers have always seemed well beyond our reach, until now.6. huge questions remain to be answered, before we can hope to have a complete picture of the universe we live in.learning procedures: step 1. practice before class translation: group 1&31. 走了很长的一段路，他完全累倒了。group 2&42我们所参观的这个博物馆是全市最大的。step 2. whilestudy 1. selfobservationgroup 1&3write down another form of the following words:(1) violence - adj: _ (2) harm-adj _(3) develop-n _ (4) depend-adj _(5)disappoint-adj _ (6) publishing- v _(7) present- n _ (8) gradual-adv _group 2&4translate the following phrases:in time: take care of:depend on: now that:preventfrom all sorts of:cheer up get the hang ofbe different form break out 2. self-experienceread the passage quickly and answer the following questions:group 1what happened to us when the rocket rose into the air?group 2.why is the spaceship not falling back to the earth like an apple drops to the ground?group 3.in li yangpings opinion, what they shall feel when they get closer to the moon?group 4. what happened outside the spaceship when we come near the earth?3. self-digestionread the passage carefully, then fill the missing words into the blanks.group 1 and 3before we left, li yangping _ to me that the force of _ would change three times on our _ and that the first change would be the most _. then we were off, as the _ rose into the air, we were _ back into our seats because we were trying to _ the pull of the earths _. it was so hard that we caoud not say anything to each other, _ the weight _ and i was able to talk to him.group 2 and 4 leaving the moons _ was not as painful as leaving the _. but returning to the earth was very _. we watched, _ as fire broke out on the outside of the spaceship as the earths gravity _ . again we were pushed hard into our _ as we came back to land. “that was very exhausting but very_ too.” i said, “now i know much more about gravity! do you think we could _ some stars next time? ” “of course,” he _, “which _ would you like to go to?”4.discussion:discuss with your partner together and fill in the forms.group 1& 3on the earthin spaceon the moonthe way gravity changedgroup 2 & 4.on the earthin spaceon the moonthe weight changedstep 3. post-study part 1. choose the best words or phrases. in time, take care of, depend on , now that, preventfrom, all sorts of, cheer up, get the hang of, be different from, break out1 will you be home _to see the children before they go to bed?2 _ you are grown-up, you shouldnt rely in your parents.3 when the war _, they were forced to leave their motherland.4 children _ their parents for everything.5 what _you _ joining us last night?6 oh, _, tom, life will still go in.7 _ strange sounds met the ear.8 the two boys _ each other in their tastes.9 press this button when the light goes on -youll soon _ it.10. we must _books borrowed from the library.part 2. complete the following sentences: 1. 健康取决于均衡的食物、新鲜的空气和充足的睡眠。health _ _ balanced food, fresh air and enough sleep.2. 什么也不能阻止她那样做。there was nothing _ _ her _ _ so.3. 科学家们认为地球之所以不同是因为地球表面的水中有小植物出入故。_ _ is that the earth was different _ _ the arrival of small plants growing in the water in its surface.4. 她不但是个摄影师，而且还是个天才的音乐家。she is a talented musician _ _ _ being a pho