人教新课标 高中英语必修三Unit 4 Reading 重点短语和长难句分析 课件.pptVIP

3. What it was to become was uncertain until between 4.5 and 3.8 billion years ago when the dust settled into a solid globe. ①what引导的是_____从句, what在从句中作become的_____。 ②思考:When引导的是定语从句or时间状语从句？ ③主语从句中was to become是“be to do”结构，在句中表示____________的动作。 主语 表语 “将要发生” 4. The earth became so violent that it was not clear whether the shape would last or not. ①so…that…如此…以至于… ②It is/was not clear whether…不清楚是否… It was not clear whether the shape would last or not. 主 系 表 真正主语 5. They were in time to produce carbon dixoide, nitrogen, water vapor…，which were to make the earth’s atmosphere. ① in time及时, 终于 eg. The doctor came just in time. 拓展： all the time 一直, 始终 at the same time 同时 from time to time 时不时地 in no time 立刻, 马上 ②which引导的是__________________ 非限制性定语从句 6. What is even more important is that as the earth cooled down, water began to appear on its surface. ①what 引导的从句是________. ②that 引导的从句是_________,其中又有一个as 引导的____________. 主语从句 表语从句 时间状语从句 7. It was not immediately obvious that water was to be fundamental to the development of life. ①that 从句是__________,是真正的主语, it是__________。 ②be fundamental to …意思是______________ 主语从句 形式主语 对……至关重要 8. What many scientists believe is that the continued presence of water allowed the earth to dissolve harmful gases and acids into the oceans and seas. ①what引导的是________, what在从句中作believe的_____. ②that引导的是_________. ③ dissolved…into…________________ 主语从句 宾语 表语从句 把……融入… Astronomy: the science of the stars (language points)  重点短语： according to 按照，根据 L1 whether…or not 是否 L9 in time 及时 L10 cool down 冷却 L14 be fundamental to 对…至关重要 L20 dissolve…into… 把…融入… L23 a chain reaction 连锁反应 L25 8. lay eggs 下蛋 L39 9. be different from 不同于… L43 10. give birth to 产生，分娩 L43 11. in one’s turn 轮到某人；接着 L46 12. look after 照顾，照看 L47 13. prevent……from…… 阻止…L48 14. escape from… 逃脱… L48 15. as a result of 作为…的结果L49 16. depend on 依赖，依靠 L50 Self-study: 1. No one knows exactly how the earth began, as it happened so long ago. 2. However, accordi