Unit 4 Astronomy 学案.doc

Unit 4 Astronomy: the science of the stars 导学案 The two third period: Language points(II—III) 主备人：万桂兰 审核人：李超华 Class_______ Name_______ Group____ 【教学目标】： I.【知识与技能目标】： 1. Learn some useful words and expressions. 2. Understand the text better. 【情感态度与价值观目标】: Arouse students’ interest to search for the mystery of space. II.【课前自主预习】：补全下面的短语： 1. _____time 及时；终于 2. _______eggs下蛋 3. give birth _____产生；分娩4. ________ one’s turn 轮到某人；接着 5. prevent… ______ 阻止；制止 6. block ____挡住（光线）7. cheer ______ 感到高兴 8. ________ that 既然 9. break ________ 突发；爆发 10. watch ______ 密切注视；当心 11. cool _____ 冷却12. as ______ as 也；还有… … 13. depend ______ 依靠；依赖 14. get close ____ 靠近 III.【拓展提升】Language points: 1. What it was to become was uncertain until … 注：Not…until…直到…才… It is/was not until… that… 是强调结构… 他昨天直到七点才离开学校. e.g. He didn’t leave school until seven o’clock. ------It was not until seven o’clock that he left school. 2. The earth became so violent that it was not clear whether the shape would last or not. 1) last vi. 持续 The fine weather only lasted for a few day.翻译：__________________________ Friendship lasts forever.　翻译_____________________________________ 3. They were in time to produce carbon,…, which were to make important is in time: sooner or later; eventually 迟早;最终 我迟早会遇见他. ——I’ll see him in time. in time (for sth. /to do sth.): not late及时；不迟 她会及时回来准备晚餐. —— She will be back in time to prepare dinner. 你认为我们能及时赶上火车吗? Do you think we can get there ___________the train? 与time相关的短语: on time _______in no time________ at times _________ at a time___________ once upon a time ____________ at one time ____________ from time to time __________________ (sth) be to (do): ①. 不可避免要发生或必须发生。She is to be honored for this great work. ② 表示按计划、安排要发生的动作When are they to hand in their plan？ ③ 表命令Tell her she is not to be back late! 4. It was not immediately obvious that water was to be fundamental to the development of life. 1)It was (not ) obvious that…显而易见的… 2)Be fundamental to