when or while
Unit3 Section A Grammar focus
Past continuous tense
过去进行时&
Mr. Robin is watching TV now.
Mr. Robin TV.
7 ：00pm ， yesterday
was watching
What is Mr. Robin doing?
What was Mr. Robin doing at 7:00pm yesterday?
now
What is Susan doing?Susan is skating now.
What was Susan doing?Susan was skating at this time last weekend.
last weekend
at 9 ： 00am last Sunday
What is Larry doing?She is reading now.
What was Larry doing?She was reading at 9:00am last Sunday.
Kitty / fish / at 9:00 last Sunday
Kitty was fishing at 9:00 last Sunday.
Garfield / have lunch / from 2:00 to 2:30 yesterday afternoonGarfield was having lunch from 2:00 to 2:30 yesterday afternoon.
Please make up some sentences:
The kids / play football / at this time yesterday
The kids were playing football at this time yesterday.
Cindy / sing and dance / between 7:30 and 8:00 last night
Cindy was singing and dancing between 7:30 and 8:00 last night.
What was/were … doing when the earthquake came on May 12 ， 2008?
They were playing basketball when the earthquake came.
He was sleeping when the earthquake came.
What were you doing when the earthquake came on May 12 ， 2008?
Pair work
A: What were you doing when the earthquake came?
B: I was … when the earthquake came./
When the earthquake came, I was …
the earthquake happened.
the boys were playing basketball , when
The boys were playing basketballWhen?
While
When the UFO landed, what was the boy doing?
The boy was walking down the street
____ the UFO landed.
_____the boy was walking down the street, the UFO landed.whenWhile
When the UFO took off, what was the girl doing?
The girl was having ice cream
____ the UFO landed._____the girl was having ice cream, the UFO landed.whenWhile
_____he was cooking, I called him.While
______she was reading, I left my house.While
I knocked at the door______Xiaoxin was taking a bath.
while
When VS WhileThe boy was walking down the street when the UFO landed.
The girl was having ice cream when the alien got out.
While the boy was walking down the street, the UFO landed.
While the girl was having ice cream, the alien got out.
?
More examples:
Mr. Wu was writing on the blackboard when Mary came in.While Mr. Wu was writing on the blackboard, Mary came in.
Tony was sleeping when someone knocked at the door.While Tony was sleeping, someone knocked at the door.
I was in the classroom when Kid past by the hall.While I was in the classroom, Kid past by the hall.
Find out the rules
Rules
② ③
①
① when 意为“在……时刻或时期”，它可兼指“时间点”与“时间段”，所引导的从句的动词既可以是终止性动词，也可是持续性动词。 如：
When I got home, he was having supper.
我到家时，他正在吃饭。
When I was young, I liked dancing.
我年轻时喜欢跳舞。
back
②while 只指 " 时间段 " ，不指 " 时间点 " ，从句的动词只限于持续性动词。如：
While Miss Chen was having a class, the earthquake happened.
While I was sleeping, a thief broke in.在我睡觉时 , 盗贼闯了进来。
陈老师上课的时候，地震发生了。
back
③while 引导的时间状语从句多用进行时态，而 when 引导的时间状语从句多用一般时态。
1.We were talking________ the teacher came into the classroom.2.I was singing _________ he was dancing.3.________ I was cutting hair, the UFO landed.4.The boys were playing by the river ____ Tom fell into the river.5.My mother was washing ______ my father was cooking.6.What were you doing _____ the UFO arrived?
When or While?when
when
when
while
While
while
练 习1. What ________ your brother ________ (do) at nine o’clock last night? 2. They ____________ (listen) to music at that time.
3. When I saw him, he _____________ (search) the Internet.
4. They ______________ (discuss) a problem in the meeting room at this time yesterday.
5. ______ Amy ______ (visit) the Science Museum from 9:00 a.m. to 11:00 a.m. yesterday?
wasdoing
were listening
was searching
were discussing
Was
visiting
( )1.I first met Lisa three years ago. She ____ at a radio shop at that time.
A. will work B. was working C. works D. is working( )2.What __ Mike __ at 10:00 last night ? A. did , do B. will , do C. is ,doing D. was , doing ( )3.---Where is Lucy now ?--- Look ! She
___TV with her mother in the living room . A. is watching B. watching C. was watching D. watched
B
D
A
at that time
at 10:00 last night
now
Exercise 根据句意，选择正确的选项。1. She ( was watching / watched ) TV when her mother (was coming / came ) in .
2. John (was reading / read ) a book at 10:00am last night .10:00am last night
3.It (was raining / rained ) hard at 9:00 pm last night .9:00 pmlast night
Who’s the thief?
At the party last night, while Erin was singing, her bike was stolen （被偷） by a thief. Find out the thief.
Role play
Let’s go!
Work in a group, one of you is the detective( 侦探 ). Ask and answer the following question.
What were you doing while Erin was singing?
A: I was watching TV while Erin was singing.
B: I was talking with Jack when Erin sang the song.
C: I was talking on the phone then.
D: I slept…
…
Now, the detectives make a report.
In my group, student A was … student B was … so, no one could be the thief.
conclusion
Past continuous tense
When & while
Homework
1. Tell a story about your last weekend.
2. Finish a testing paper.
3. Review the grammar and new words.
