unit 1过去进行时讲义

中小学1对1课外辅导专家龙文教育个性化辅导教案讲义任教科目：英语授课题目：过去进行时与it用法年级：八年级任课教师：陈双莲授课对象：王梓恒武汉龙文个性化教育常青校区教研组组长签字：教学主任签名：日期：武汉龙文教育学科辅导讲义授课对象王梓恒授课教师陈双莲授课时间2月日授课题目过去进行时与it用法课型新授课使用教具笔、讲义、白纸教学目标1掌握过去进行时的结构用法2 掌握过去进行时与一般过去时的区别3 掌握it的各种用法教学重点和难点1 过去进行时的用法2 过去进行时与一般过去时的区别3 it作形式主语、形式宾语的用法4 it的固定句型参考教材新目标八年级下教学流程及授课详案一过去进行时(一）定义过去进行时，是表示过去某个具体时刻正在进行的事情或动作。

（二）结构was/were +doing (现在分词）（三）用法1、过去进行时表示过去某段时间内持续进行的动作或者事情。

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：（1）We were watching TV from seven to nine last night.（2）What was he researching all day last Sunday?（3）My brother fell while he was riding his bicycle and hurt himself.（4）It was raining when they left the station.（5）When I got to the top of the mountain, the sun was shining.2. 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'c lock 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)3. 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)4、表示在过去即将发生的动作。

如：She asked him whether he was coming back for supper.5、表示过去的反复性或习惯性的动作，常与副词always,constantly,continually,fre quently等连用，常常带有说话人的某种感情色彩。

如：His mother was always working like that.他目前总是那样工作。

6. 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, notice, own, remember, seem, suppose, understand, want, wish等。

例如：误：I was know ing 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。

典型例题：1) Mary ___ a dress when she cut her finger.A. madeB. is makingC. was makingD. makes答案C. 割伤手指是已发生的事情，应用过去时。

同时，when表时间的同时性，“玛丽在做衣服时”提供事情发生的背景，因此用过去进行时。

2) As she ___ the newspaper, Granny ___ asleep.A. read; was fallingB. was reading; fellC. was reading; was fallingD. read;fell答案B.句中的as = when, while，意为"当……之时"。

描述一件事发生的背景时，用过去进行；一个长动作发生的时候，另一个短动作发生。

句意为"在她看报纸时，奶奶睡着了。

"句中的fell (fall 的过去时)，是系动词，后跟形容词，如：fall sick。

（四）过去进行时和一般过去时的区别1．一般过去时叙述旧事，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）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，叙述习惯动作可与would 换用。

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 toTom used to be fat /There used to stand a tree there. (状态)d) was (were) used to +ving表示“合适于，适应于…..”He used to work at night . (“习惯”表经常)He was used to working at night. (习惯表适应)３）表示过去的经历，平行动作，依此事件用一般过去时。

He sat there and listened to the radio.(依此发生)４）表示客气委婉的语气，用于情态动词，助动词和want , wonder , hope 等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.2、过去进行时与一般过去时的区别（1）过去进行时与一般过去时，两者都表示过去发生的动作,但过去进行时表示在过去某一特定的时间点或时间段正在进行的动作,而一般过去时表示在过去时间完成的动作｡例如: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)A. 过去进行时却表示动作在持续或未完成，而一般过时往往表示某一动作已经完成。

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。

She waved to me. 她朝我挥了挥手。

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 of 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)when 和while的用法区别两者的区别如下：①when是at or during the time that, 既指时间点，也可指一段时间；while是during the time that，只指一段时间，因此when引导的时间状语从句中的动词可以是终止性动词，也可以是延续性动词，而while从句中的动词必须是延续性动词。

②when 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。

③由when引导的时间状语从句，主句用过去进行时，从句应用一般过去时；如果从句和主句的动作同时发生，两句都用过去进行时的时候，多用while引导，如：a. When the teacher came in, we were talking.当此句改变主从句的位置时，则为：While we were talking, the teacher came in.b They were singing while we were dancing.巩固练习1. I ______ cooked a meal when you _____ me.a. cooked, were ringingb. was cooking, rangc. was cooking, were ringingd. cooked, rang2. He said he _____ to draw a plane on the blackboard at that time.a. triesb. triedc. was tryingd. will try3. While she ______ TV, she ______ a sound outside the room.a. was watching, was hearingb. watched, was hearingc. watched, heardd. was watching, heard4. They _____ a football game from 7 to 9 last night.a. were watchingb. watchc. watchedd. are watching5. What book ____ you ______ when I ____ you at four yesterday afternoon?a. did, read, was seeingb. did, read, sawc. were, reading, sawd. were, reading, was seeing6. It was Friday evening. Mr and Mrs. Green _____ ready to fly to England.a. are gettingb. getc. were gettingd. got7. Lei Feng _____ always _____ of others when he ______ in the army.a. is, thinking, wasb. was, thinking, isc. did, think, isd. was, thinking, was8. A girl ______ my pen fall off the table when she _____ me.a. saw, passedb. was seeing, passedc. was seeing, passedd. was seeing, was passing9. We ____ for tom at ten last Sunday. He often kept us ______.a. were waiting, waitingb. were waiting, waitc. waited, waitingd. waited, wait10. He ____ his father on the farm the whole afternoon last Saturday.a. helpsb. would helpc. was helpingd. is helping11. While mother _______ some washing, I _____ a kite for Kate.a. did, madeb. was doing, madec. was doing, was makingd. did, was making12. “_______ you angry then?” “they ______ too much noise.”a. are, were makingb. were, were makingc. are, maded. were, made13. He ____ some cooking at that time, so _____ mea. did, heardb. did, didn’t hearc. was doing, heardd. was doing, didn’t hear14. This time yesterday jack _____ his bike. He _____ TVa. repaired, didn’t watchb. was repairing, watchedc. repaired, watchedd. was repairing, wasn’t watching15. His parents wanted to know how he _____ on with his new classmates.a. was gettingb. getsc. is gettingd. will get二it用法考点一：it用作代词1.指代无生命的事物，动物，植物2.代表前文已提到的或下文要出现的一件事物。