chat过去进行时

2021年1月10日发(作者：程元)
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过去进行时的结构及句型变化


过去进行时由现在分词构成。如：
I was doing my lessons then. 那时，我在做功课。
We were cleaning the house. 我们在打扫房子。

过去将来时态的肯定句、否定句和疑问句形式：
肯定句例句：I was walking down the street when a UFO landed.
否定句例句：I wasn't walking down the street when a UFO landed.
一般疑问句例句：Were you walking down the street when a UFO landed?
特殊疑问句例句：What were you doing when a UFO landed?

过去进行时的用法详解
(1) 表示在过去某一时间正在进行的动作，此时句中往往有表示过去的时间状语then,at that time,thistime,yesterday等。
I was doing my homework when my mother came to home.
(2)叙述在过去的同一时间都在进行的几个动作，通常用While
I was studying at college while my brother was teaching at university..
(3)表示在过去某一段时间内一直持续进行的动作
They were expecting you yesterday, but you didn't turn up.

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。
2)表存在、状态的动词，如appear ,exist ,lie ,remain ,stand ,seem等
3)表感觉的动词，如see ,hear ,feel ,smell ,sound ,taste等.
4)表一时性的动词，如accept ,allow ,admit ,decide ,end ,refuse ,permit ,promise等。

初中英语过去进行时练习题
一、写出下列动词的三单现、过去式和现在分词
go ______ _______ _______ enjoy _______ _______ ________
buy ______ ______ _______ eat_____ _______ _______
get _______ _______ _______ walk ________ _______ ________
take______ ______ ______ dance_______ ________ _______
write _____ ______ ______ run______ _______ _______
swim_____ _______ _______ find _______ _______ _____
begin______ ______ ______ eat ______ _______ ______
play ______ ______ _______ study ______ ______ ________

二、按要求改写句子
1. The boy was playing basketball.
否定句：____________________________
一般疑问句：_________________________
肯定回答：_____ _____________________否定回答：______________________
was closing the door now.
否定句：____________________________
一般疑问句：_________________________
3.I was doing your homework.
否定句：____________________________
一般疑问句：_________________________