人教版八年级下册 Unit5 What were you doing when the rainstorm came？ SectionA Grammar focus 4a-4c 课件(共21张PPT)

(共21张PPT)
1.复习并巩固过去进行时态构成及运用
2.体会while 和when 在引导时间状语从
句时用法上的区别
3.能讲述过去发生的事
教学难点：when 和 while 的用法和区别
用所给单词的适当形式填空
1.—What___ you____ (do) when he arrived
—I ___________(watch) TV at that time.
2.Bob _________ (shop) when I ____(go)
to the park.
3.I saw some kids_______(play) football
over there.
4.She ________(read )books while her mother
________(cook) yesterday afternoon.
5.It's raining________(heavy) outside.
were
doing
was watching
精彩回顾
was shopping
went
playing
was reading
was cooking
heavily
1. take
2. play
3. clean
4. shop
5. sleep
6. buy
7. leave
8. turn
9. kid v.开玩笑
10. hit
taking
playing
cleaning
shopping
sleeping
buying
leaving
turning
kidding
hitting
took
played
cleaned
shopped
slept
bought
left
turned
kidded
hit
预习热身
写出现在分词形式
写出过去分词形式
思考:
以下句子用了_______时态
过去进行时
① He was watching TV from 8:00 to 9:00 last night.
②They were having an English class at this time
yesterday.
③The students were studying carefully when the
teacher came into the classroom.
④She wasn't doing her homework at 7:00 last night.
⑤ --Was he playing basketball then
--Yes, he was./ No, he wasn't.
⑥What were you doing when I called you last night.
观察及探究 合作完成学案上探究（一）
1.过去进行时表示在过去某一时刻或某一段时间段正在进行的____或存在的_____。经常和表示______(现在/ 过去）的时间状语连用，如：at this time yesterday，when I called him,from 8:00 to 9:00 last night,at 7:00 last night等。
2. 结构 ：主语+_____/ _____ + 动词_____
+时间状语
3.把肯定句变为否定句时，将 was 改为_____,将were 改为 ________;一般疑问句是将____或______提到句子前。
动作
状态
过去
was
were
-ing
wasn't
weren't
was
were
阅读下列句子，思考 When 和While 的用法，完成合作探究（二）
过去进行
when
一般过去
while
⑤ While Andy was waiting for the bus, he was reading a newspaper.
⑥ He was cleaning his car while I was cooking.
主句和从句的动作在过去的某时刻或某
段时间同时发生，而且动作都是持续性
的，此时用 _________ 引导从句，而且主
句和从句都用 ____________ 时态。
过去进行
while
1. Tom was eating supper,
it began to rain outside.
2. What were you doing, Mr.
Zhou came in
3. Peter was sleeping, a
thief broke into his house.
4. She left her hometown she
was five.
有时候when 和while 可以进行转换
=
John was taking photos when Mary
bought a drink.
While the boy was singing in the classroom,
the teacher came in.
=
The boy was singing in the classroom when the teacher came in
（用when 来进行转换）
4a
开车去洗车房
1. While John was taking photos, Mary bought a drink.
John was taking photos when Mary bought a drink.
While John was playing the piano, Mary left the house.
John was playing the piano when Mary left the house.
=
=
2.
While John was cleaning his room, Mary turned on the radio.
John was cleaning his room when Mary turned on the radio.
While John was shopping, Mary took the car to the car wash.
John was shopping when Mary took the car to the car wash.
3.
4.
=
=
Fill in the blanks with was, were, when or while.
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.
While was
was
While
When
was
was
were
4b
用所给词的适当形式填空
1．My father______ still__________ (sleep) when
I_______ (get) up yesterday morning.
2．My grandma______________ (cook) breakfast while
I_________________ (wash) my face this morning.
3．My mother___________________(sweep)the floor
when I____________ (leave) home.
4．The students_____________ _(have) a biology class
when the visitors_________ (come)．
was
sleeping
got
was cooking
was washing
was sweeping
left
were having
came
单元语法聚焦五
中考连接
1. My mother ________ dinner when I got home
yesterday.
A．has cooked B．was cooking
C．will cook D．cooks
2. I called you yesterday evening. But nobody
answered.
—Oh, sorry. Maybe I _____ in the bathroom at that time.
A．take a shower
B．took a shower
C．was taking a shower
B
C
语法口诀