9b Unit 1 Life on Mars Welcome to the unit 導學案
i have many pairs of shoes ______(to choose from), but i don’t know which pair ______. (to choose) 2. the journey might take only a very short time in space shuttles that travel at half the speed of light.用以光速一半速度飛行的太空穿梭機進行旅程可能只花很短的時間。分析：此句是that連接的定語從句。that引導的定語從句修飾先行詞space shuttles, 從句中的動詞的人稱和數由先行詞space shuttles決定。3. compared with life on earth, life on mars will be better in many ways . 與在地球上的生活相比,火星上的生活在很多方面將會更好. compare with…意思是“與……做比較”。在句中是過去分詞短語作狀語，此時with和to可通用。 e.g.與我們的那條路相比,這條路繁忙得多。this road is quite busy______ ____ ours. (compared … with / to )4. every student will have a computer at home connected to inter-planetary network. 每個學生家有一臺連接星際網絡的電腦。connect to 意思是“與……連接”。這里的connected to 是過去分詞后置作定語，修飾computer。當然我們也可以用connect … to…結構表示“把……和……連接起來”。 e.g. 江陰大橋把江陰和靖江連接了起來.jiangyin bridge _______ jiangyin ___ jingjiang. (connects … to )t: well, boys and girls, you really did a good job today. homework: 1 read the passage aloud.2 finish off the additional exercises. additional exercises: 用括號內所給詞的適當形式填空:1. there is less air ________ ( pollute) in town that in the town.2. look at the newest t-shirt. it’s made of cotton. i think it will become ______ ( fashion ) this summer.3. it’s ______( high) possible that people can live on mars in the future.4. grandma is too old _______ ( settle) on another planet.5. the helmet is made of metal. it’s too heavy. when i wear it, i feel ________ ( comfort).6. my father cooks very well. the food he cooks is as _______ ( taste ) as that in the restaurant.7. here are many kinds of moon cakes for you_________( choose ) from.8. ______ (compare) with what he had already, the new stamps were not very interesting.9. _______(hope), doctors have found a new way to operate on the patients — flying hospital.10. we should keep water from _____ (be) polluted.keys to additional exercises:1. pollution 2. fashionable 3. highly 4. to settle 5. uncomfortable 6. tasty7. to choose 8. compared 9. hopefully 10. being通過教師的問題激活學生已有的對義演的知識。為下面的寫作做鋪墊。