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过去进行时
构成：were/was+doing
否定句were/was+not+doing
一般疑问句were/was+主语+doing 肯定回答Yes，…..was/were. No,…..wasn’t/weren’t 例句
We were expecting you yesterday.
I was reading a book last night.
用法：过去进行时，是表示过去某时正在进行的状态或动作
一.作发生。常用的时间状语this morning, the whole morning, all day yesterday, ?from nine ?to ten last evening, when, while例如：We were watching TV from seven to nine last night.
昨天晚上七点到九点的时候我们在看电视。What was he researching all day last Sunday?
上周日他一整天都在研究什么？
二、过去进行时可以表示在过去某个时间点发生的事情。时间点可以用介词短语、副词或从句来表示。如：What was she doing at nine o'clock yesterday??
昨天晚上九点她在做什么？(介词短语表示时间点) When I saw him he was decorating his room.
当我看见他的时候他正在装饰房间。(when从句表示时间点) 三、在复合句中，如果主要动作和背景动作都是延续的或同时发生的，那么主从句的动词都可用过去进行时。例如：
While he was waiting for the bus, he was reading a newspaper. 他边等车边看报。(两个动作都是延续的) He was cleaning his car while I was cooking. 他擦车时我在做饭。(两个动作同时进行) 四、通常不能用于过去进行时的动词主要有：agree, be, believe, belong, care, forget,
hate, have(拥有), hear, know, like, love, mean, mind, own, remember, seem, understand, want, wish等
例如：误：I was knowing the answer.
正：I knew the answer. 我知道答案。误：I wasn't understanding him. 正：I didn't understand him. 我不明白他的意思。
过去进行时和一般过去时的区别
一．一般过去时叙述旧事，过去进行时描述背景。
Ａ、一般过去时
１）叙述过去状态、动作或事件He went to Beijing the other day.（带具体时间）２）表示过去的习惯a) would ,used to与过去时
would 表间断性不规则的习惯，常带频率时间used to 表一贯性有规律的习惯
They used to meet and would sometimes exchange one or two words. He smoked a lot two years ago. （过去行为）
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b) Would 用于文中不用于句首，只表过去习惯。Used to 表今昔对比的含义?
When he was a boy , he would often go there . （叙述过去）She isn't what she used to be. (今昔对比) c) 表示状态时一般只用used to
Tom used to be fat /There used to stand a tree there. (状态) ３）表示过去的经历，平行动作，依次事件用一般过去时。He sat there and listened to the radio.(依次发生)
４）表示客气委婉的语气，用于情态动词，助动词和want , wonder , hope How did you like the film? / Could you help me? B. 过去进行时
---表示在过去某阶段或某一时刻正在发生What were you doing at 8:30 last night? (过去某时刻正在发生) ---短暂性动词用过去进行时表示按计划、打算During that time he was going with us.(表示打算) ---与always ,often ,usually 等连用表喜爱，讨厌等感情色彩。He was always changing his mind.
等
二、过去进行时与一般过去时的区别
A. 进行时表某一行为的“片断”，一般时表示行为的“整体”和存在的状态。I was reading the book at that time. (未读完，“读”的片段) I read the book yesterday. (已读完，表整个“读”) B、一般持续时间状语多与进行时连用It was raining all night.(优先用was raining ,rained 为持续动词，故也可使用) He was writing a letter the whole afternoon. (短暂动词与持续时间连用，表反复，连续发生，不可用一般过去时)
C、while 时间状语从句中用短暂动词时只能用进行时。例：He broke a chair while he was jumping up and down.
D、While 所在句中，主从句动作大致持续时间相等时，主从句一般都用进行时，但动词若是持续动词可都用一般过去时，两个动作一长一短时，短的用一般时，长的用进行时。
I was cooking the dinner while he was playing the piano.(平行) I cooked the dinner while he played the piano. I saw him while I was walking to the station. 三、英语中有四类动词一般不用进行时（不用现在进行时和过去进行时）
1）表心理状态、情感的动词，如love ,hate ,like ,care ,respect ,please ,prefer ,know 等，若用进行时则词意改变。I’m forgetting it . (=beginning to forget )
2)表存在、状态的动词，如appear ,exist ,lie ,remain ,stand ,seem3)表感觉的动词，如see ,hear ,feel ,smell ,sound ,taste等. 等。四、例题
Tom ___ into the house when no one ___ . A. slipped/was looking B. Had slipped /looked C. slipped/had looked D. was slipping /looked 分析此题先要理解好
when ，表“此时”，说明主句中slipped
是较短行为，而look是
较长行为的片断，即汤姆溜进房子，此时没人瞧见，故选A为正确。
等
4)表一时性的动词，如accept ,allow ,admit ,decide ,end ,refuse ,permit , promise
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现在完成时
一、基本概念
1 定义：表示动作从过去某一时间开始，一直延续到现在，可能还要继续下去。常和all this time, this week, this month, all night, all the morning, recentlyfor引导的状语连用。
2 构成：have/has + been + 动词的现在分词（3基本句型：肯定式疑问式
简略回答
′
′
′
1) I have been working.
Have you been working? Yes, I/we have. No, I/we havent. 2) He/She/It has been working.
Has he/she/it been working? Yes, he/she/it has. No, he/she/it hasnt. 3) We/You/They have been working.
Have they been working? Yes, they have. No, they havent. 注：现在完成进行时基本上没有否定结构二、现在完成时和现在完成进行时的区别在与表示一段时间的状语
(for,since短语)连用时，两种时态可以互换使用
I have been studying English for over two years= I have studying English for over two years 但在口语中倾向于用现在完成进行时。
在不用表示一段时间的状语的情况下，现在完成进行时和现在完成时不可以随便互换使用：（1）现在完成进行时更强调动作的延续性，现在完成时往往没有。试比较：
They have been widening the road．（a）They have widened the road．（b）（a）句的意思是他们在加宽马路，但尚未完工。（b）句的意思则是已完工了。（2）在不用时间状语的情况下，现在完成进行时表示动作仍在进行。而现在完成时则表示动作在过去已结束。如：
The students have been preparing for the exam.（还在进行）学生们一直在准备考试。The students have prepared for the exam.（已经结束）学生们为考试作了准备。（3）有些表示状态，感情，感觉的动词如：
have, exist, like, hate, hear, know, sound等动词不
能用于现在完成进行时，但可用于现在完成时。如：
They′ve known each other since 1970.自从1970年起他们就相互认识了。(4) 现在完成进行时可以表示动作的重复，而现在完成时一般不表示重复性。
Have you been meeting him recently?你最近常和他见面吗？
(5) 现在完成进行时比较生动，有时含有明显的感情色彩，而现在完成时往往只说明一个事实，一种影响或结果，平铺直叙，没有什么感情色彩可言。如：
What have you been doing？（a）I have been waiting for you for two hours.
I have waited for you for two hours. Who has been eating the oranges?
What have you done？（b）我一直等了你两个小时。我等了你两个小时。谁一直在吃这些桔子呀？
(可能表示不满) (说明一个事实) (还剩余一些)
（a）句表示惊异。（b）句只是一个问题。
V-ing）
等状语以及since和
(6) 现在完成进行时强调动作，而现在完成时强调结果。
过去进行时现在完成时
