资源简介

(共13张PPT)
过去进行时
The Past continuous tense
一、概念
过去进行时表示过去某一时刻或某段时间正在进行的动作。
The reporter said that the UFO was travelling east to west when he saw it.那位记者说他看见UFO时，它正由东向西飞行。
I don't think Jim saw me; he was just staring into space.我想吉姆没看见我；他当时正在凝视天空。
二、过去进行时的构成
1.肯定句：主语 + was/were + 现在分词...
All the pupils were writing their homework in the classroom then.那时，所有的小学生都在教室里写作业。
By the time we got there，it was already getting dark.等我们赶到那里时，天已经黑下来了。
2.否定句：主语 + was/were + not + 现在分词...
They were not playing basketball，but playing volleyball.他们不是在打篮球，而是打排球。
3.疑问句：Was/Were + 主语 + 现在分词...
Were you having dinner when they came —Yes，we were./No，we weren't.他们来的时候，你们是否在吃饭 ——是的，在吃饭。/不，不在吃饭。
4.疑问代词/疑问副词 + was/were + 主语 + 现在分词...
Who was singing last night —Tom was singing last night.昨晚是谁在唱歌 （就主语提问）——是汤姆。
三、现在分词的构成
1. 在动词原形后直接加-ing
look-looking cook-cooking read-reading
2. 以不发音字母e结尾的动词 ，去掉e再加-ing
write-writing live-living
3. 以重读闭音节结尾且末尾只有一个辅音字母的动词，双写该辅音字母后再加-ing
begin-beginning swim-swimming sit-sitting
4. 少数几个以ie结尾的动词，要变ie为y，再加-ing
tie-tying die-dying lie-lying
四、基本用法
1、过去进行时的基本用法主要表示过去某一时间正在进行的动作。
例:He fell asleep when he was reading. 他看书时睡着了。
2. 用过去进行时表示现在主要是为了使语气委婉、客气。
例:I was wondering if you can give me a lift. 我不知你能否让我搭一下车。
3.过去进行时表示感彩与现在进行时相似，过去进行时也可表示满意、称赞、惊讶、厌恶等感彩，也通常与 always,forever,continually等副词连用。
如:They were always quarrelling. 他们老是吵架。
4.表示故事发生的背景。
例:It was snowing as the medical team made its way to the front. 那支医疗小组往前线行进时，天正下雪。
五.过去进行时与一般过去时的区别
1.都强调过去发生的事
过去进行时强调过程，不一定完成
一般过去时强调事件，一定完成
例:I was typing a letter last night. 昨晚我在打一封信.(可能没打完)
I typed some letters last night. 我昨晚打了一些信.(已经打完)
2、一般过去时表示只做一次动作，而过去进行时却表示动作反复地进行。(短暂性动词)
例:She waved to me. 她朝我挥了挥手。
She was waving to me at that time.
那时她不断地朝我挥手。
We built a bridge last winter.去年冬天我们修了一座桥。（建成了）
We were building a bridge last winter.去年冬于我们在修一座桥。（一直在修，不涉及结果）
六、专题训练
单项选择
1. A: How did the accident happen
B: You know , it ______ difficult to see the road clearly because it _____ .
A. was …. was raining B. is … has rainedC. is … is raining D. will be … will rain
2. She_________ apples in her garden when I_________ to see her yesterday.
A. picked，went B. was picking， went
C. picked，was going D. was picking，was going
3. She _____ the room when I went to see her .
A. doesn’t clean B. isn’t cleaning C. didn’t cleaning D. wasn’t cleaning
4. The Reads _______ lunch when I got to their house .
A . were having B. was having C. are having D. is having
5. I ____ an old friend of mine when I ______ in the street yesterday afternoon .
A. met... was walking B. was meeting ... walked
C. was meeting ... was walking D. met ... walked
Answers:ABDAA
用括号内所给动词的正确形式填空
1. I , with my sister , sometimes ______ swimming in the river. (go)
2. He __________ the film with us last night. (not see)
3. You draw quite well. I think you _______ a good painter in the future. (be)
4. One Sunday morning the man upstairs heard the sound of children ________ in the park. (play)
5. Mother __________ vegetables in the garden now. (grow)
6. My father ______________ some washing when I got home yesterday evening. (do)
Answers : 1. go 2. didn’t see 3. will be 4. playing 5. is growing
6. was doing
改错题
1.What is your English teacher doing this time yesterday Was she talk with some parents
2.When I left, he drawing a map of the world.
3.What did they doing when you saw them They were cleaning the classroom.
4.At that time the Class Two students were not play football in the playground.
5.One day John was writing to one of his friends when his mothers comes back from work.
Answers:1is-was 2 drawing-is drawing 3did-were
4play-playing 5comes-came
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