内蒙古巴彦淖尔市乌中旗二中九年级英语上册《Unit 4 Amazing Science Topic 2 When was it invented Section B》学案（无答案） 仁爱湘教版.doc

九年级英语上册unit 4 amazing science topic 2 when was it invented section b学案（无答案） 学习目标：课前预习: 一1a导学：读对话，了解大意后填空。the children _ _(正在参观)the science museum together. there were three_(发明物)they visited. _ _(白炽灯) _ _ _(被广泛使用)in our_ _(日常生活)_ _ _ (在过去). it _ _(被发明)_(被)thomas edison in 1897 and he invented _ _ (超过)one thousand things _ _ _(在他的一生中) . the radio_ _(被发明)_(被)guglielmo marconi in 1895. whats more, they visited a different airplane, it_ _(被发明) by wilbur and orville in 1903.1a语言点导学：its said that edison invented more than one thousand things during his life. 译：_1）its said that 意为“据说”。类似的用法还有：its reported that (据报道); its certain that (是一定的); its impossible that (是不可能的)等.2) invent v. 发明; invention n. 发明物; inventor n.发明家eg: these _ _ many great_. 这些发明家发明了许多伟大的发明。3）during ones life 某人的一生 = _二、3a导学：读短文，找出并翻译下列短语。3a知识点导学：1there is dna in most living things, including human beings. 包括人在内的大部分生物都有dna。 1）including prep. 包括there are twelve of us, _ _ _ _. 包括我和汤姆共有12个人。 2）human being 为可数名词，意为“人类”，常用复数human beings， 而man也可作不可数名词，指人类。human也指人类，复数humans.2. with its help, scientists are able to explore more ways to treat many serious diseases such as heart disease, aids and cancer. 在它（克隆技术）的帮助下，科学家能够发现更多治疗心脏病，艾滋病和癌症等许多严重病的方法。1) with ones help 译为：_ = _2) to treat many 动词不定式作后置定语修饰前面的more ways treat v. 治疗，医治 treat as = _ 意为“把看做” the teacher _ the students _ her children.1 课堂活动：检测1a预习导学，并学习1a。2 完成1b。用句型：_ was invented by _ in _.练习表格内容。3 完成2 和4。4 学习3a. 1) 预习检测。2) fast reading：找出文中含有被动语态的句子。3) read and check tor f ( )1.the cloned sheep, dolly, was cloned in canada.( )2.scientists have cloned pigs.( )3.every part of our body has different dna.( )4.there is dna in most living things.4) however, dollys dna is exactly the same as that of the sheep she was cloned from. 句中的that指代_课后巩固：. 用所给词适当形式填空.1. edison was a great _. he _ more than one thousand _. (invent)2. english is _ (wide) spoken in the world.3. it _ (say) that you have sent him three letter.4. it is a good way _ (treat) people who has bad heart disease. 单项选择。1. he was _. we should help him. a. dangerous b. with danger c. of danger d. in danger.2. a talk on chinese history _ in the school hall last week. a. is given b. has given c. was given d. gave3. your dna is similar _ your parents, but it isnt the same _ theirs. a. as; as b. to; to c. as; to d. to; as4.there are five pens in my pencil-box, _ the one you gave me yesterday. a. includes b. including c. included d. include5. it is said that the potato chips _ by mistake about one hundred years ago. a. invent b. invented c. are invented d. were invented. 选择适当的句子补全对话。a: how do you say this in english?b: its a piece of paper.a: whats the paper made from? b: _1_a: was the paper invented in china?b: _2_a: oh, china is great.b: thanks. but you americans are very great, too. _3_a: yes. now rabbits and rats have been cloned successfully.b: by the way, _4_a: its dna. its in all kinds of living things.b: _5_ perhaps “another you” will appear in the future.a. whats it made of?b. that is to say, c. what technology is used in cloning?d. of course. china is the first