内容正文:
课 题
8A Unit 8 Grammar过去进行时
教学目标
1. 学生能感知并总结过去进行时的定义,构成和用法;
2. 在语境中识别并且使用过去进行时;
3. 了解并且掌握when、while 以及 as 引导时间状语从句的用法。
重难点透视
1. 过去进行时的两大核心用法:(即描述过去特定时刻正在进行的动作、描述过去某一时间段内持续
进行的动作),能结合典型场景进行句式运用;
2. 过去进行时与一般过去时的用法区分,尤其是在“同时发生两个动作”“短暂动作打断持续动作”
场景下的精准选用。
3. 过去进行时when 、while、as的用法辨析(动作长短、时间点/段)。
知识点剖析
序号
知识点
预估时间
掌握情况
1
过去进行时基础概念、结构等知识点
35 min
2
过去进行时中when、while、as的用法辨析和时态
20 min
教 学 内 容
【课前导入】阅读下面的对话,注意过去进行时的用法
(
go home本身是短暂性动作,但在 as we were going home中,
were going是过去进行时,表示在那个时间段正在进行的动作,
可看作延续性的情境 。
) (
这里的there was是there be句型的过去式,
与后面时间无关,它强调过去
“
存在
”“
有
”
。
)
Suzy:There was an accident near our school at 4:10 yesterday afternoon.It happened as we were going home from school.
Amy:I know.I saw it while I was riding my bike home.It was raining when the police arrived.
Suzy:I didn't see it.I hope no one was badly hurt.
【Grammar】---Past continuous tense 过去进行时
· 定义:表示过去某一时刻正在进行的动作或过去某一阶段一直在进行的动作。
· 结构:was/were + 动词 -ing 形式, 否定结构:was/were + not + 动词 -ing 形式
· 标志词:
1 (过去具体的时间点):at 8 o'clock last night、this time yesterday、at that time、
2 (过去的时间段)the whole morning、all day yesterday、from...to...yesterday
3 (过去时的时间状语从句) 由while、when等引导。
· 动词现在分词(v-ing形式)的变化规律:
类别
规则
例句
一般情况下
直接 + ing
play
--playing
以不发音的字母 e 结尾
去e + ing
dance
-- dancing
以 辅元辅 结尾
双写尾字母 + ing
run
-- running
少数以 ie 结尾的动词
变ie为y + ing
lie/die/tie
--lying/dying/tying
· 过去进行时不同句型结构:
肯定句
主语+was/were+doing+其它.
否定句
主语+was/were +not+ doing+其它
一般疑问句
Was/Were+主语+doing+其它?
· 肯定回答
· 否定回答
Yes,主语+was/were.
No,主语+wasn’t/weren’t.
特殊疑问句
特殊疑问词+一般疑问句语序+其他?
· 有些动词通常不用于进行时:
1. 表示心理状态、情感/精神活动的动词,如love、hate、like、know、agree、believe等。
2. 部分连系动词,如seem、appear等。
3. 感官动词,如see、hear、smell、sound、taste等。
4. 短暂性动词,如decide、stop等。
5. 表拥有的belong、owe(欠(某物))、own等。
· 过去进行时的基本用法:
基本用法
1.表示过去某时刻正在进行的动作。What were you doing at that time?
2.表示过去某段时间内持续的动作。He was writing to his friend all day yesterday.
4. 过去进行时还可以表示两个过去的动作同时进行,这时可用连接词while引导。
George was reading while his wife was listening to the radio.
4.“was going to”表示过去打算。He was going to be our team leader.
过去进行时
与一般过去的区别
过去进行时表示在过去一段时间或某个时刻正在进行的动作。
而一般过去时表示一个完成的动作。
I was watching TV at nine last night.
I watched TV last night.
· 过去进行时中when、while和as(“当…的时候”)的用法:
引导词
用法
when/as
既可以指某一点时间,也可以指某一段时间,其引导的从句中的谓语动词
表示的动作既可以是瞬间性的,也可以是延续性的;
while
指一段时间,其引导的从句中的动作是延续性
如:There were already many people in the meeting room when he arrived. 他到场时会议室已有很多人。
While Millie was watching TV, her mum was sleeping. 米莉在看电视时她妈妈在睡觉。
I saw a traffic accident as I was riding to school this morning. 今天早晨我骑车上学时看见一起交通事故。
· 【易错点提示】:
1. 谓语动词必须是延续性的。指一段时间时,when、while和as都可用;
指某一点时间时,只能用when或as,不能用while。
如:When/As he woke up, it was eight o'clock. (√) While he woke up, it was eight o'clock. (×)
2. 当某个动作正在进行时,又发生了另一动作,常用“一般过去时 + when/while/as + 过去进行时”结构,过去进行时动作成为一般过去时动作发生的“背景”。
如:It began to rain heavily when/while/as we were having dinner.
3. 谈论两个同时进行的长动作,常用“过去进行时 + while + 过去进行时”结构。
如:They were rowing boats while we were climbing the hill.
4. 强调某个动作正在进行时,另一个动作突然发生,常用“过去进行时 + when + 一般过去时”结构 。
如:I was walking in the street when he called me.
· 答题技巧:一找时标 ;二定时态;三变动词。
练习巩固
1、 单选题。
1. I was observing and copying the behaviors of my cat ______ my mom came in ______ with shock.
A. when; freezing B. while; frozen C. when; frozen D. while; freezing
2. I ______ about my best friend Vicky when my phone rang. It was her!
A. think B. will think C. have thought D. was thinking
3. —Our local dance show Dream of the Red Chamber is so hot.
—Indeed. I ______ for tickets the whole morning. Luckily, I finally got one!
A. fights B. will fight C. have fought D. was fighting
4. We were all surprised when we made ______ clear that he ______ the company sooner or later.
A. that; would leave B. it; was leaving C. that; left D. it; will leave
2、 用括号中所给单词正确形式填空。
5. As she picked up the phone, she r______ the voice immediately as that of her old friend.
6. While we ______ (mop) the floor, the telephone suddenly rang.
7. My parents ______ (watch) TV when I got home yesterday evening.
8. The sun ______ (shine) brightly when we had the sports meeting last month.
9. The soldiers ______ (袭击) the enemy's camp under the cover of night the other day.
10. The plane ______ (降落) at six this morning. Everything was OK.
11. Jack ______ (search) for information on the computer when his telephone rang.
12. It was she that stole the box. Look, she was ______ (lie) to everyone!
13. The children ______ (swim) when they ______ (hear) a big noise outside. Later they knew a huge tree ______ (fall) down because of the strong wind at that time.
14. When we arrived at the top of the mountain, the sun ______ (shine) brightly.
15. —Someone broke into Granny Wang's home yesterday.
—Luckily, she ______ (walk) her dog outside at that time.
3、 改错题
1.They was playing soccer when it rained.
2. She was read a book when her mother came home.
3. He did his homework at 9:00 last night.
4. We were went to the beach yesterday.
5. The birds was singing in the trees when we passed by.
答案:
一、CDDB
二、recognized ;were mopping; were watching ; shone; landed;
was searching ; lying ;were swimming、heard、fell; was shinning; was walking
三、1.was→were 2.read→reading 3.did→was doing
4.were went→went/were去掉,went→going 5.was→were
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