山东省郓城县实验中学高中英语 Unit4 Astronomy the science of the stars预习学案 新人教版必修3

unit 4 astronomy : the science of the stars一.预览内容：1.了解宇宙科学、地球生命的起源，了解万有引力、黑洞、宇宙旅行等天文学知识，培养学生对科学的兴趣，激发学生探索科学的热情。掌握本单元的词汇和习惯用法。学会在日常交流中正确使用指导。掌握名词条款中主题条款的用法。二.知识点2.however，according to a widely accepted theory，the university e began with a big bang that threw matter in all directions。in all direction=in every direction所有方向人员方向相同的方向In the direction of特定方向Under the direction of在某人的指导下按照According to the directions文档中的说明3.what s more important is that as the earth coled down，water began to appear on its surface。As用连接词引导时间状语从句。也可以指导时间、原因、方法、让步等状语从句。1)时.时间状语从句指南when/while。但是as更强调主要句节的动作同时发生。2)many changes took place in my village与as time went on一起使用。3)因为web don t know what to do as web were just visiting there。4)条款You ought to do as Paul tells you。虽然让步状语从句让步状语从句要倒着安装。也就是说，要把表语的名词、形容词和副词放在句子的开头(名词前不能加冠词)；有时提前谓语部分的动词原形。Child as he is，he knows a lot。Hard as he worked，he didnt pass the exam。Try as you may，you wont succeed。5.later when the plants grew into forests，reptiles appeared for the first time。For the first time是副词，the first time是连接词引导时间副词子句。Every time /next time /each time也有类似的用途。the moment/the minute；the first time/secondlast time；immediately/directly；Imstantly等Eg : each time I saw him，I thought of his poor brother。he took off his coat the moment he arrived home。6.why they suddenly disapped still remaines a mystery。Remain: VI .留下；留下。还剩下保持link.v n. /adj./to be done不变e . g . where he has gone remains a mystery。The door remained locked。It sounds like a good idea，but it remains to be seen whether it will succed。The fact remains to be proved。Remaining adj .其馀，用作premier，用作the rest of当Left说“剩下”的时候。后可归属性e . g . he bought a gift for his daughter，using the remaining money/the rest of(his)money/the money left。7.we shall feel its gravity pulling us，but it will not be as strong a pull as the earth s。as adj. a/an n. as和.相同we have as big a house as our neighbour s。as adj ./adv . asHe drove as fast as he could .as much a/an n. asto hold the Olympic games is just as much a competition among countries as to win an Olympic medal。it is generally believed that teaching t is as much an art as it is a science。 as much/many。asreturn as many books/much money as you borroved。8.break out(战争、火灾等)爆发了；(病)突然发生Break up分解/破裂；溶解/体损伤/粉碎