Module 3 Unit2知识点课件 2022-2023学年外研版八年级英语下册

Unit 2 We have not found life on any other planets yet. Module 3 journey to space Retelling Read aloud Retell Module 3: Journey to space P23 Unit 2 We have not found life on any other planets yet. ●Scientists think that there has been life on the earth for hundreds of millions of years. 已经存在 there have /has been是there be句型 的现在完成时，表示从过去某一时刻 开始就已经存在某样东西。 即there be句型和have/has done的结合 there will be是there be句型和will do的结合 ●None of them has an environment like that of the earth, ●so scientists do not think they will find life on them. ●Scientists have also discovered many other galaxies in the universe. none（既可指人也可指物)，意为“没有一个”，与of连用 No one 相当于Nobody (一般指人），不可以与of连用 find “找到” ， 强调结果，look for寻找，强调过程 find out “查明”，弄清楚 discover “发现” 客观存在的不为人知的事物 The sun and its planets are called the solar system, and our solar system is a small part of a much larger group of stars and planets, called the Galaxy or the Milky Way. 被叫做 被动语态：主语是动作的承受者而非执行者。 一般现在时的被动语态结构“am/is/are+过去分词” 被叫做 非谓语动词，过去分词表被动，现在分词表主动或正在进行。 much修饰比较级larger There is a girl called Lisa. There is a girl crying. I enjoy reading the book (call) Gone with the wind. called So how large is the universe? It is impossible to imagine. It's+形容词+(for sb.)+to do. （对某人来说），做某事是... 对学生来说，学好英语是重要的的。 It's important for students to learn English well. ●They have even sent spaceships to travel outside the solar system. ●However, no spaceship has travelled far enough to reach other stars in our Galaxy. send sth. to do sth.派遣...去做 形容词/副词+enough+to do. 足以做某事，可与so...that...结构转换。 主语+be+形容词+enough to do. 主语+动词+副词+enough to do. 我们的教室足够大，能容纳60名学生。 Our classroom is big enough to hold 60 students. =Our classroom is so big that it can hold 60 students. 10 Practice 练习一、单项选择 ( )1.It’s_____to finish the work in such a short time. We need more help. A. different B. important C. impossible D. necessary ( )2.He hasn't finished his homework________,so he can't go with you. A. already B.just C.also