《一般过去时》多媒体CAI课件运行平台.ppt

文档介绍：课件名称:《一般过去时》多媒体CAI课件
运行平台:Windows 98
制作软件:Microsoft PowerPoint 2000
开发者:南宵中学何元康老师
E-MAIL : huayuan6563@
知识结构
一般过去时
构成
用法
常用时间
动词的过去式
1、表示过去某个时
间发生的动作或
存在的状态。
2、表示过去经常或
反复发生的动作。
yesterday
last night
in 1990
two days ago
动词过去式
的构成
规则动词
不规则动词
构成
读音
规则动词过去式的构成
构成规则
例词
1、一般在动词原形末尾加– ed look looked
play played
start started
2、结尾是 e 的动词加-- d live lived
hope hoped
use used
3、末尾只有一个辅音字母的
重读闭音节词,先双写这
个辅音字母,再加—ed
stop stopped
plan planned
trip tripped
4、结尾是“辅音字母+y”的动词,
先变“y”为“i”再加—ed
study studied
carry carried
清念/t/ ,元浊/d/ ;
/t/ /d/ 之后念/id/
规则动词词-ed的读音
说明:
1、清念/t/ ,即 ed 在清辅音后面念/t/ ,例:finished helped
passed cooked
2、元浊/d/ ,即 ed 在元音,浊辅音后面念/d/ ,
例:borrowed enjoyed
called moved
3、/t/ /d/ 之后念/id/ , 即 ed 在/t/ /d/ 音后面念/id/
例:wanted shouted
needed counted
不规则动词表
Infinitive Past tense
am is was
are were
begin begun
break broke
bring brought
build built
buy bought
can could
Infinitive Past tense
catch e came
do did
draw drew
drink drank
drive drove
eat ate
fall fell
用法
1、表示过去某个时间发生的动作或存在的状态。
He was here yesterday.
I got up at six thirty yesterday morning.
My father was at work yesterday afternoon.
Did you have a good time last summer?
2、表示过去经常或反复发生的动作。
My father often went to work by bus last year.
When I was a child, I often listened to music.
常用时间
常与一般过去时态连用的时间有:
yesterday
yest