2016届高考英语第一轮复习课件4.ppt

话题：学校课程 请根据下列提示，写一篇120～150词的短文，说明整个实验的内容。 关键词语： 目的：不打烂鸡蛋取走蛋壳。 用品：一只玻璃杯，一个小煮锅(saucepan)，水，一个鸡蛋，250毫升醋(vinegar)。 步骤：1.先把鸡蛋在锅中煮约十五分钟；2.把鸡蛋放在玻璃杯中；3.往玻璃杯中放醋，醋要漫过鸡蛋；4.把鸡蛋在醋中浸泡24小时。 结果：24小时后蛋壳完全消失。 结论：醋中的酸性物质与蛋壳中的碳酸钙(calcium carbonate)反应生成二氧化碳(carbon dioxide)，蛋壳(shell)溶解消失。 Ⅰ.头脑风暴，知识链接 Ⅱ.范文必背 An Interesting Experiment The aim of the experiment is to move the shell from an egg without breaking the egg. To carry out the experiment, you need the following things: a glass, a small saucepan, water, an egg and about 250ml vinegar. When all these things are ready，you can begin to make the experiment. First, boil the egg for about 15 minutes in the saucepan filled with water. Next, place the egg in the glass and add some vinegar to it. After that，leave the egg in the vinegar for 24 hours. 24 hours later, you can be supposed to see the shell disappear completely. The egg shell disappears because it is made of calcium carbonate and the vinegar is an acid. The two substances react to form carbon dioxide. The egg shell dissolves. What an interesting reaction it is! Ⅰ.单词速记 核心必记 1．________(vi.)膨胀 2．________(adj.)普通的；平常的 3．________(vi.)形成 4．________(n.)天平 5．__________(n.)结论________(v.)下结论 6．________(n. v．)目标；目的；以……为目标→________(adj.)无目标的 7．________(vi.)(化学)反应→________(n.)反应 8．________(adj.)吃惊的；惊愕的→___________(adj.)令人吃惊的→________(vt.)使吃惊→___________(n.)惊奇 高频必知 9．________(vi.)收缩 10. ________(adj.)部分的；局部的 11．________(vi.) 漂浮 12．________(n.)混合物→________(vt.)混合 13．_________(n.)设备；装备→________(vt.)装备；配备 14．________(adj.)与电有关的；用电的→________(n.)电→________(adj.)电的 15．________(n.)演讲→________(n.)演讲者 Ⅱ.短语互译 1．往……加入……　　　____________________ 2．不让……进入；使……避开…… _____________ 3．开始做某事(表示允许)；(口)请说吧；请用吧 __________ 4．为……感到骄傲/自豪　　____________________ 5．应当；理应　　____________________ 6．react with　　____________________ 7．put...in order　　____________________ 8．keep down　　____________________ 9．used to　　____________________ 10．in the area of　　____________________ 情景活用 用上面单词或短语的正确形式填空 ①Water is an ________(普通的)sub