高考英语一轮复习 Unit 3 Under the sea教学案 新人教版选修7-新人教版高三选修7英语教学案

Unit 3 Under the sea三言两语1．Rubbish and waste water are being poured into the river；as a consequence ， water resources have become badly polluted.2．We should adopt reducing，reusing and recycling approaches to solve the problem and take good care of our environment.3．With the number of cars increasing fast in our city，our environment is getting increasingly worse.1．众所周知，由于全球变暖，全球水资源短缺问题正变得日益严重。It is well known that the global water shortage is becoming increasingly severe mainly due to global warming.2．现在，越来越多的人开始认识到，目前的环境与我们对地球的所作所为有很大关系。Now more and more people become aware that the present environment has much to do with what we have done to the earth. [单词 拼写应用]核心单词1．witness vt.当场见到； 目击n．目击者； 证人； 证据2 ． opposite prep. 在……对面adj.相对的； 相反的3 ． pause vi.&n. 暂停； 中止4．drag vt.拖； 拉； 扯5．neat adj.〈口〉好的；整齐的；匀称的6．flee vi.逃避；逃跑vt.逃离7 ． meantime adv. 期间；同时8 ． narrow adj. 狭 窄[语境运用] 用所给词的适当形式填空1．The year 1849 witnessed (witness) a great war in that country.2 ． Scientific studies have shown that making a habit of pausing (pause) before you do something can actually have a big impact on how your life turns out.3．He arrived at school early in the morning，dragging (drag) his heavy instrument case across the campus.4 ． People fled (flee) aimlessly in terror as the tsunami struck the city without any precaution.5 ． To their relief ， their students narrowly (narrow) escaped from the shaking building.的；有限的；狭隘的9 ． shallow adj. 浅的；肤浅的；浅显的10．awesome adj.使人敬畏的；令人畏惧的拓展单词1．accommodate vt.提供住宿→ accommodation n ．住所；住宿 2 ． deep adj.&adv. 深的(地)→depth...