学科 英语 年级/册 九年级 教材版本 人教版
课题名称 Unit 5 What are the shirts made of
难点名称 1、能够用英语描述及询问物品的制造材料和在哪里制造;2、能正确理解和使用一般现在时表被动语态的用法及句子结构。
难点分析 从知识角度分析为什么难 本课教学要让学生在掌握新单词的基础上掌握以下句型:-This ring looks nice.Is it made of silver -Yes, and it was made in Thailand.被动语态用法以及句子结构知识点本身内容复杂,对于应用能力不足的学生来说难度较大。
从学生角度分析为什么难 初三学生已经具备了一定的读写能力,但对于英语语法知识的掌握还不牢固,经常会混淆一些动词的过去式,而在这基础上还要学习一般现在时表被动语态的语法知识,对于学生来说较有难度。
难点教学方法 情境导入法 自主学习法 小组合作探究法
教学环节 教学过程
导入 -Who invented paper first -Cai Lun invented it in Han dynasty. -What was paper made of then -It was mainly made of bamboo. -Was it easy for people to make paper then -No, it was very difficult then. -What is paper made of now -It‘s mainly made of wood, bamboo, and cotton.
知识讲解 (难点突破) 主动语态与被动语态 英语中有主动(active voice)和被动(passive voice)两种语态。(类似于汉语中的“把”字句和“被”字句)。 1、在主动语态中,主语是动作的执行者。 Many people speak Chinese.(其中,谓语speak的动作是由主语many people 来执行的。) 2、在被动语态中,主语是动作的承受者,即行为动作的对象。 Chinese is spoken by many people.(其中,主语Chinese是动词speak的承受者。) 二、被动语态的基本结构 Be动词+及物动词的过去分词,即:be+done. 注意: 1、被动语态的否定句,一般疑问句和时态的转换要靠be动词来完成。即否定句在be动词后加not,一般问句be动词提前。 2、被动语态中的实意动词必须是及物动词。 3、语态和时态并不矛盾,被动语态可以存在于不同时态当中。 They clean the river. The river is cleaned by them. 被动语态句中的谓语部分由助动词be+动词的过去分词构成。其中,助动词be(am/is/are)来体现时态的变化。 三、主动语态变被动语态口诀:宾语提前主语变,原主变宾by后见,时态人称be关键。 四、make的过去式和过去分词都是made. 肯定句:The shirts are made of cotton. 否定句:The shirts are not made of cotton. 一般疑问句:Are the shirts made of cotton? be made of的意思是由......制成,也可以写为:产品+be made of+原料。 These are all materials, many things are made of them. Silver, wood, steel, silk, gold, cotton. 情境对话 -What's this -It's a flower. -What is it made of -It is made of gold. -What's this -It's a blouse. -What is it made of -It is made of silk. 六、be made of、be made from 和 be made in的区别 1、be made of、be made from 两词组都是“由……制成的”之意。be made of 指从原料到制成品只发生了形状变化,没有发生本质变化(属物理变化)be made from指从原料到制成品发生了质的变化,已无法复原(属化学变化) 2、be made in 在...制造/生产(后接产地) 3、be made by sb.表示由某人制成,后接动作的执行者。 4、be made into 被制成为...,后接成品。
课堂练习 (难点巩固) 1.Books are made paper while paper is mainly made wood. A. of;of B. from;from C. of;from D. from;of 2.-Your coat looks very nice. What's it made -Cotton, and it is made Wu han. A. from;in B. of;in C. from;on D. of;on 1、English (speak)by many people. 2、Tea (grow)in Southeast China. 3、Many trees (plant)in North China. 4、The brush (make)of bamboo and animal's hair. 5、Confucius (know)as a great thinker in China.
小结 本节课我们主要学习了:一般现在时表被动语态的用法及句子结构,主动语态与被动语态的转换,以及be made of、be made from和be made in的区别。 That's all for this lesson. Thank you for listening!See you next time!