过去进行时 优秀课件

Was he doing homework at four o’clock last Friday? No, he wasn’t.
What was he doing at four o’clock last Friday?
He was playing football at four o’clock last Friday.
1.We were talking_w_h__e_n___ the teacher came into
the classroom.
2.I was singing __w__h_il_e___ he was dancing.
3.W__h_il_e_/W__h_en I was cutting hair, the UFO landed.
Eg.While I was watching TV ,my father was reading a newspaper last night .
You are listening while I am speaking.
While/when Peter was sleeping ,his mother left home.
What was he doing at this time yesterday? He was cooking a meal at this time yesterday.
ride a horse
What was he doing the whole afternoon? He was riding a horse the whole afternoon.
如何区别 when 和while中的时态：
1 .When my mothபைடு நூலகம்r c_a_m__e (come) back， I_w__a_s__d_o_in_g_ (do) homework yesterday.
=My mother came back When /while I was doing homework yesterday. 2. When I __g_e_t__(get) to school, Mike _w__e_re__r_e_a_d_in_g(read) English this morning.
当我到家时，她正在做饭。
When/ While they were talking , the bell rang.
※ 5.while引导时间状语从句时，当主句和从句动 作同时进行，无时间差，均用进行时，而when 不 能同时用进行时。 6.while 强调一段时间， 所以从句的谓语动词常 是延续性的.
eg.Jim was watching TV at 8:00 yesterday evening.
Jim wasn't watching TV at 8:00 yesterday evening Was Jim watching TV at 8:00 yesterday evening?
from8:00 to 10:00 yesterday
1. 这两个词都有“当…的时候”的意思。 2. when引导的时间状语从句，主过---从过。 3.※ when 引导的时间状语从句，当一个动作发生的时
候，另一个动作正在进行，先发生的动作用过去进行 时， 后发生的动作用一般过去时。
4.when后面 的从句为进行时，可以用while代替 .
Eg. When I came home, she was cooking dinner.
They were swimming from8:00 to 10:00 yesterday. They weren't swimming from 8:00 to 10:00 yesterday. Were they swimming from 8:00 to 10:00yesterday?
Let’s talk
昨天下午露西一直在做风筝（不知道是否做完）
Lucy made a kite yesterday afternoon.
昨天下午露西做了一个风筝。（做完了）
一般过去时:表示过去某一时间发生了的动作或存在 的状态。
意义二：过去进行时还用于when，while引导的时间 状语从句
when 和 while 的异同:
4.My mother was washing _w__h_i_le__ my father
=I got to school when/while Mike was reading
English this morning. 3.My mother was cooking while I was cleaning the room yesterday.
一、Fill in the blanks with “when” and“ while”.
Let’s talk
1.
at ten o’clock yesterday
2 3.
from 9:00 to 10:00 yesterday
yesterday afternoon
Attention
过去进行时与一般过去式的区别:
Lucy was making a kite yesterday afternoon.
过去进行时 优秀课件
The Past Continuous Tense
1.意义一 ：表示在过去某一时刻或过去某一 段时间正在进行的动作。
2.标志词: at this time yesterday, last night
at 11:00 last Sunday, the whole morning
at that time yesterday , yesterday afternoon
at 9:00 last night,
from7:00to9:00yesterday
3.构成： S+ was/were +ving+…. 否定式： S+ was/were not +ving…. 疑问式： Was/Were +S….ving....?
Yes,…was/were. No,….wasn’t/weren’t. 对动作提问：What was/were +Ｓ＋doing….?