Unit 4 Topic 1-2021-2022九年级英语上册知识点精讲精练+ABCD每课作业（仁爱科普版）

Unit 4 Amazing Science Topic 1 When was it invented. 第一部分 知识点精讲精练 一、词汇拓展记忆 1．invent _____________(名词“发明者”) _____________(名词“发明，创造”) 2．think ______________(动词过去式) ______________(名词) 3．imagination _____________(动词) 4．detail ______________(形容词) 5．explorer ______________(动词) 6．Korea _____________(形容词) 二、重点词组短语 1．允许某人做某事allow sb.to do sth. 2．花时间做某事spend...in doing sth./ on sth. 3．把……出示给…… show...to... 4．由……制成be made of/from 5．用来做……be used for doing/ to do 6．进入太空go into space 7．实现come true 8．把……送入…… send...into... 9．发生come about 10．嘲笑laugh at 11．在任何时候at any time 12．剩下的时间the rest of the time 三、知识点解析 1．I was not allowed to play computer games last night.昨天晚上我不被允许玩电脑游戏。 be(not) allowed to do sth.(不)被允许做某事 I was not allowed to stay out past ten when I was in high school.上高中时我不被允许10点以后还不回家。 (1)allow后接名词或动名词作宾语，即allow doing sth.允许做某事； (2)allow后接不定式作宾语补足语，即allow sb.to do sth.允许某人做某事。 【即学即练】 ①Does your teacher allow ________(read) magazines in class after you finish your homework? ②I allow the kids an hour a day ________ computer games. A．play　　　 B．playing　　　 C．to play ③I don’t think sixteen-year-olds should ________ to go to the Internet bar. A．allow B．be allowing C．be allowed 2．It’s made of metal.它是由金属做的。 be made of用……制成 This coin is made of silver.这枚硬币是银质的。 (2)材料＋be made into＋成品 (3)be made up of由……组成 (4)be made in在某地制造 【即学即练】 ①纸可以用木材制造。 Paper can ________________ wood. ②Glass can be made ________ drinking glasses. A．into B．of C．from D．up of 3．It’s said that he invented more than two thousand things during his life.据说他一生中发明了两千多件东西。 It’s said that...据说…… It’s said that he will study abroad.据说他将去国外学习。 It is said (reported) that ...该句型中的 it 仍是形式主语，真正主语是 that 引导的主语从句。 【即学即练】 据说早期欧洲的纸牌是为娱乐和教育设计的。 ________________ the early European playing-cards were designed for entertainment and education. 4．An invention may be a new product or a new way of doing things.发明可以是一种新产品，也可以是一种新的做事方法。 invention n．发明，创造 Fax machines were a wonderful invention at the