人教版九年级全一册 Unit 5 What are the shirts made of？课件 (共18张PPT)

(共18张PPT)
课题：What are the shirts made of 难点名称：一般现在时的被动语态人教版九年级-上册-unit5目录CONTENTS导入The novel coronavirus(新型冠状病毒)is beatenby doctors.Can you describethis picture 在英语中，动词有两种语态，即主动语态和被动语态。被动语态的基本结构是“助动词 be + 及物动词的过去分词”，其中助动词be有人称、数和时态的变化,其变化规则与be作为连系动词 完全一样。
一般现在时的被动语态
知识讲解
一：英语的谓语动词有两种语态
We speak English.
主语
谓语
宾语
English is spoken by us.
主语
谓语
宾语
宾变主,主变宾,前加by
动变被,看清be, 结构分别be+ p.p.
主动语态
被动语态
知识讲解
1.一般现在时被动语态的各种句式结构
肯定式 主语+am/is/are+过去分词（ + by…)
否定式 主语+am/is/are + not +过去分词 (+by…)
疑问式 Am/Is/Are+主语+过去分词(+ by …)
特殊疑问词+ am/is/are+主语+过去分词（+ by ...)
知识讲解
2.一般现在时被动语态的基本用法
用法 示例
表示经常性或习惯性发生的被动动作 I am often asked the question by my pupils.
表示近期正在发生的被动动作 These days people are moved by a teacher named Zhang Lili.
描述某种常态化的被动的客观事实 The spaceship is mainly controlled by computer.
强调目前存在的针对行为主体人的被 限制性动作
You aren’t allowed to take photos.
知识讲解
3.主变被解题步骤:
1. 找宾语 ----即动作的承受者
They make shoes in that factory.
Shoes
2. 判断宾语的单复数和动词的时态 ----即be动词的单复数和时态.
are
3. 修改谓语的时态 ----即原句动词改为过去分词
made
4. 修改原句的主语 ----即by+主语/ 宾语.
by them in that factory.
难点突破
People play football all over the world.
2. The old man on TV tells a story on Sunday.
3. Students listen to the kind teacher carefully.
Football is played all over the world by people.
A story is told by the old man on TV on Sunday.
The kind teacher is listened to by students carefully.
把下列的主动句变为被动句。
课堂练习
难点巩固
一般现在时的被动语态基本结构：
S(主语）+am/is /are +过去分词
变为被动语态
小结
助记：
被动不离“be” “p.p.”, “p.p.”前面助动be
主谓一致莫忘记，am, is, are现在时。
What are these books made of They are made of paper.What is the silk made of
It is made of cloth.
Where is the silk made
It is made in China.
中国制造
made in
China
中国创造
created
in China
艰难见真心，磨炼出意志，越是要负重前行，砥砺奋进！