(2) 如果while前后的动词都是进行时态,while 可译为“与此同时”
I was reading while my brother was drawing.
traffic accident
A: What were you doing when the traffic accident happened? B: We were having a party.
time yesterday /at 5:00 yesterday afternoon/at that time, then 等连用( 或者用 另一动作来表示过去的时间)
① 表示过去某个时刻正在进行的动作。 例句：
What were you doing at nine last night? 昨晚九点你正在干什么？
I was going shopping.
at 9:00 last night
Where was she at 9:00 yesterday? I think she was in/at… She was sweeping the floor at that time.
One point
What _w__a_s__ Tom ____d_o_i_n_gat
cooking a meal. Yesterday afternoon?
playing volleyball.
having a PE class.
I was
watching TV.
We were
working in the chemistry lab. Sweeping the floor.
making a model .
I was taking a shower at nine last night. 昨晚九点我正在洗澡.
They were playing basketball at 5 o’clock yesterday afternoon. 昨天下午五点他们在打篮球。
②：表示在过去某一时间内正在进行的动作。
She was writing a letter when I came in. 我进来时，她正在写信。
feeding my dog.
Pairwork:
Patterns:
A: What were you doing at nine o’clock last Sunday morning?
B: I was sleeping. How about you? A: I was doing my homework. B: You are kidding
The barber was cutting my hair when they arrived. 他们到达时，理发师正在给我剪头发。
What were they doing at 10:30
Last Monday ? They were running.
What were you doing at 10: 10 yesterday morning?
She was playing the piano.
过去进行时着重描述当时正在持续 进行的动作，它的特点是：暂时， 持续和未完成，强调过程；一般过 去时表示发生过的动作或存在的状 态，即表示动作发生过，而且已经 结束了，强调结果。
过去进行时
1 含义：（概念） 表示过去某个时刻正在进行的动作。
（或过去一段时间正在进行的动作）
2. 句子结构: ： be (was/were) + doing 即： 主语 + was/were + doing sth. + 时间状语
3. 时间状语词:at 8 o’clock last night/this
7:30 this morning?
She w__a_s_ c_o__o_k_i_n_g_b_r_e_a_k_f_a_st
at 7:30 this morning.
Tom
One point
What __w_e_r_e___ they ___d_o_i_n_g_
from 8 to 9 last night?
take off
What were they doing when the plane took off?
They were swimming in the river.
What was Alice doing when I got out of the shower from the bathroom?
When the UFO landed, the boy was walking down the street.
==While the boy was walking down the street, the UFO landed
(1) “当…的时候”,如后面连接的动词为进行 时态,则用while多于用when。而when通常 与瞬间性动词或延续性不强的动词连用。
Talk about the pictures
1
2
3Leabharlann What were they doing yesterday afternoon?
last night?
What were you doing
last Saturday? at ten o’clock? yesterday morning?
at noon yesterday?
when 和while的用法区别
1.when 既指时间点，也可指一段时间; while只指一段时间. 2.when 说明从句的动作和主句的动作可以是同时，
也可以是先后发生； while 则强调主句的动作在从句动作的发生的过 程中或主从句两个动作同时发生。
My mother was cooking dinner while my father was watching TV.
They_w__e_r_e__t_a_lk_i_n_g___o_n__th_e__p_h__o_n_e__
from 8 to 9 last night.
What was Alice doing when I got out of the shower from the bathroom?
She was playing the piano.