规则变化的动词
一般在动词原形后面加-ed，例如：
play -> played
walk -> walked
start -> started
stop -> stopped
plan -> planned
以不发音的"e"结尾的动词，只需加"d"，例如：
love -> loved
use -> used
move -> moved
以辅音字母+y结尾的动词，将y变为i再加-ed，例如：
carry -> carried
worry -> worried
study -> studied
以一个重读闭音节结尾且末尾只有一个辅音字母的动词，双写该辅音字母再加-ed，例如：
stop -> stopped
plan -> planned
fit -> fitted
不规则变化的动词
这类动词的过去式形式与动词原形不同，需要单独记忆，例如：
be -> was / were
have -> had
do -> did
go -> went
say -> said
get -> got
make -> made
示例句子
I wentto the park yesterday.
They playedfootball last weekend.
She sawa movie last night.
We boughtsome flowers for her.
He ranfast to catch the bus.
语法结构
肯定句：主语 + 动词过去式
否定句：主语 + didn't（did not）+ 动词原形
一般疑问句：Did + 主语 + 动词原形
通过掌握这些规则和示例，五年级学生可以更好地理解和运用英语的过去式。