(共23张PPT)
Unit 5
What were you doing
when the rainstorm came
Section A (Grammar focus-4c)
公开课
一、语言能力
能正确的使用连词When和while(Conjunctions When and While)，
when 和while的用法及区别。
二、学习能力
能够用过去进行时谈论过去发生的事情，能够正确运用when
和while引导的时间状语从句谈论自己的经历。
三、思维品质
通过情境创设，理解过去进行时态的运用；通过小组合作总结
语法规律，学会正确使用过去进行时。
四、文化意识
发展学生的发现能力和合作精神，体会中西方语言的差别。
Let’s enjoy the following song,discuss what tense is mentioned.
(讨论歌曲中包含什么时态)
现在进行时
What were you doing at eight last night I was taking a shower.
What was she doing at the time of the rainstorm She was doing her homework.
What was he doing when the rainstorm came He was reading in the library when the rainstorm came.
What was Ben doing when it began to rain heavily When it began to rain, Ben was helping his mom make dinner.
What was Jenny doing while Linda was sleeping While Linda was sleeping, Jenny was helping Mary with her homework.
Grammar
Find out the past continuous tense.
过去进行时
was/were+ 动词ing
Grammar
过去进行时
(1)含义
表示在_______________或____________
正在进行的动作。
(2)结构
主语+ ______________
过去
进行时
过去某一时刻
某一段时间
was/ were +V-ing
I was taking a shower at eight last night.
They were hanging out at nine last Sunday.
(3)一般疑问句
Was/Were + 主语+v.-ing...
Grammar
过去进行时句型结构
(1)肯定句
主语+ was/were +v.-ing...
(2)否定句
主语+ was/were ++not+v.-ing...
(4)特殊疑问句
特殊疑问词+was/were（+ 主语）+v.-ing...
过去
进行时
What were you doing at eight last night I was taking a shower.
What was she doing at the time of the rainstorm She was doing her homework.
What was he doing when the rainstorm came He was reading in the library when the rainstorm came.
What was Ben doing when it began to rain heavily When it began to rain, Ben was helping his mom make dinner.
What was Jenny doing while Linda was sleeping While Linda was sleeping, Jenny was helping Mary with her homework.
Grammar
Try to find out the signal words!
过去进行时
标志词
Grammar Focus:
填入正确时态
1 . —What ____ you _______at eight last night
—I ______ _______(take) a shower
2. –What ____ she _______ at the time of rainstorm
—She______ _______(do)her homework.
3. —What ____ he _____when the rainstorm ________(come)
—He ______ _______(read) in the library when the rainstorm came.
4. —What ____ Ben ______when it _______ to rain heavily
—When it began to rain, Ben ____ _____(help)his mom make dinner.
5 —What ___ Jenny ______ while Linda ____________(sleep)
—While Linda ________, Jenny ______ _____(help) Mary with math.
were doing
was taking
was doing
was doing
came
was reading
was doing
began
was helping
was sleeping
was helping
at eight last night
at the time of rainstorm
when
When
when
when
while
While
时间标志词
was doing
was doing
was sleeping
What were you doing at eight last night I was taking a shower.
What was she doing at the time of the rainstorm She was doing her homework.
What was he doing when the rainstorm came He was reading in the library when the rainstorm came.
What was Ben doing when it began to rain heavily When it began to rain, Ben was helping his mom make dinner.
What was Jenny doing while Linda was sleeping While Linda was sleeping, Jenny was helping Mary with her homework.
Grammar
Observe these sentences.
非延续性
延续性
Grammar
延续性动词与非延续性动词
(1)延续性动词
动作_____(可以/不可以)延续一段时间,而不是瞬间结束。
(2)瞬间性(非延续性)动词
动作极为短暂，瞬间结束。
区别
可以
She read books for three hours last Sunday.
Yuan Longping died three years ago.
延续性
瞬间性
Grammar Focus
She was reading in the library when the rainstorm came.
My mom came back when I was sleeping in my bedroom.
when 引导时间状语从句
瞬间性
表时间点
一般过去时
过去进行时
延续性
表时间段
when引导的时间状语从句：
可用_____________动词，也可用___________动词，
分别表示时间_______和时间_________。
时态为__________________________.
瞬间性
点
段
延续性
一般过去时
过去进行时
Grammar Focus
While she was reading, the phone rang.
Some students were reading while others were writing.
while 引导时间状语从句
过去进行时
瞬间性
表时间点
while引导的时间状语从句：
用___________动词，表示时间_______。
时态为__________________________.
段
延续性
过去进行时
瞬间性
表时间点
过去进行时
主从句都是
延续性动词时，
大都用_______.
While
Fill in the blanks with when or while.
He was sleeping _____ it arrived.
______ he was sleeping, it arrived.
The boy was walking down the street ______ the storm came.
4. ______ the boy was walking down the street, the storm came.
5. The girl was shopping _____ the phone rang.
6. _______ the girl was shopping, the phone rang.
when
While
when
While
when
While
Practice
Look at the table and write sentences with both while and when.
4a
John Mary
take photos buy a drink
play the piano leave the house
clean his room turn on the radio
shop take the car to the car wash
While John was taking photos, Mary bought a drink.
John was taking photos when Mary bought a drink.
延续性
瞬间性
Practice
Look at the table and write sentences with both while and when.
4a
John Mary
play the piano leave the house
延续性
瞬间性
While John was playing the piano, Mary left the house.
John was playing the piano when Mary left the house.
Practice
Look at the table and write sentences with both while and when.
4a
John Mary
clean his room turn on the radio
延续性
瞬间性
While John was cleaning his room, Mary turned on the radio.
John was cleaning his room when Mary turned on the radio.
Practice
Look at the table and write sentences with both while and when.
4a
John Mary
shop take the car to the car wash
瞬间性
While John was shopping, Mary took the car to the car wash.
John was shopping when Mary took the car to the car wash.
延续性
At 7:00 a.m., I woke up. ________ I _______ making my breakfast, my brother ______ listening to the radio. ________ I was eating, the radio news talked about a car accident near our home. My brother and I went out right away to have a look. ______ we got to the place of the accident, the car _____ in bad shape from hitting a tree. But luckily, the driver ______ fine. The roads ______ icy because of the heavy snow from the night before.
Fill in the blanks with was, were, when or while.
Practice
4b
While
was
was
While
延续性
When
was
was
were
过去进行时和一般过去时的区别
区别：
1.过去进行时表示过去正在进行的动作,
2.一般过去时则表示一个完整的动作。
They ___________(write) letters to their friends at 9 last night.
They______(write)letters to their friends last night.
were writing
wrote
只表达了昨晚九点在写信，没有说明信是否写完。
表达了他们信已写好的意思, 整个写的过程已完成。
1. Mother _____________ (wash) clothes when
I_______ (get) home from school yesterday afternoon.
2. Look, my sister ____ (be) there in the barber
shop. The barber __________ (cut) her hair.
3. ---When ____ you _____ (see) the accident
---I _____ (see) it fifteen minutes ago.
was washing
got
is
is cutting
did
see
saw
(3)标志词
_____________________________________________________
(2)结构
主语 +______________
(1)含义
表示在____________或_________
正在进行的动作。
过去
进行时
过去进行时
at that time /at eight last night /from...to...
at this time yesterday (morning/afternoon)
the whole day/all day yesterday
when/while引导的时间状语从句
Summary
过去某一时刻
某一段时间
was/ were +V-ing
1.When引导的时间状语从句
(1)动词：
(2)时间：
(3)时态：
2.While引导的时间状语从句
(1)动词：
(2)时间：
(3)时态：
3.注意
如果主句和从句都是延续性动作，又是同时发生，
此时时间状语从句多用__________引导。
When
While
引导状语从句
Summary
延续性动词和瞬间性动词
过去进行时和一般过去时
While
可以是时间点，也可以是时间段
延续性动词
过去进行时
时间段
Thank you for listening
