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

unit 4 astronomy：the science of stars using language学案listening and speakinglearning target: to be able to understand simple dialogues and express my own ideaslearning procedures:step 1. practice before class: translation:group 1:必须采取措施保护环境免受污染。group 2.人们应该把不让塑料袋变成垃圾视为自己的职责。group 3.阅览室里不准大声说话。group 4.和我的公寓相比，我叔叔的房子就像是个宫殿。keys:1. measures must be taken to protect the environment from being polluted.2. people should take it as their responsibility that dont let plastic bags become rubbishes.3. speaking aloud in the library is not allowed.4. compared with my flat, my uncles house is like a palace.step 2. whilestudy1. selfexperiencelisten to the tape and filling in the missing words. group 1 and 3. first we had to get into _, they are very _ and _ all the oxygen we need to breathe. the suit also has _ and _ water so it can warm us if its too cold or _ us if it is too hot in _. it is very heavy. we use small _ to move around. to go left we _ the right engine and to go right we push the left _. we have to go very _ because we dont _ anything. we can fly around like _ .group 2 and 4.when we leave, we go into a _ room,. we have to _ gravity boots to _ there. we close the door _ us and then we open the door to _. then our gravity boots stop _ and we can _ out of the door. we used some _ tools that was _ round our waists. that way we didnt _ them. we did a good _. the _ works fine now.keys:group 1,3: spacesuits, thick, carry, hot ,cold, cool, space. engines, push, one, slowly, weigh, feathers.group 2,4: small, wear, walk, behind, space, working, fly. special, tied, lose, job, telescope.2.selfobservationread this passage a woman got on a bus, holding a baby. the bus driver said, “thats the ugliest baby ive ever seen.” with great anger, the woman dropped her fare into the fare box and took an aisle seat near the back of the bus. she was so angry that she kept cursing the driver all the way and couldnt calm down. a gentleman seated next to her sensed that she was agitated and asked her what was wrong. “the bus driver insulted me,” she said angrily. the gentleman sympathized and said, “why , hes a public servant and shouldnt say things to insult passengers.” “you are right” she said. “i think ill go to him and teach him a severe lesson!” “thats a very good idea,” said the gentleman, “now, let me hold your monkey!”2. selfdigestion:1) retelling: (1).retell the story, begin with: one day when i was on a bus, and i found got on the bus too.(2).retell the story, begin with: i am a gentleman, one day when i was in a bus.(3).retell the story, begin with: i am a bus driver, one day a woman got on my bus3. self-discussion:(1).what do you think of the woman?(2).what do you think of the gentleman?(3).what do you think of the driver?4. self-development (1). if you were the woman, what would you do in this situation? (2). if you were the driver knowing the woman would come to criticize you, what would you do? (3). if you were the gentleman knowing that youd made a mistake, what would you do? (4). if you were a stand-by witnessing everything, what would you do or say in this situation?step 3. poststudygroup 1 and 31. do you think it is a funny story? why or why not?group 2 and 4.2. have you ever seen any passenger quarrel