六年级下册英语中，动词的过去式用于描述过去发生的动作或状态。以下是一些常见的动词及其过去式形式：
am/is → was
are → were
do → did
go → went
eat → ate
buy → bought
swim → swam
sleep → slept
have/has → had
see → saw
drink → drank
take → took
ride → rode
teach → taught
sing → sang
find → found
stop → stopped
read → read （注意：read的过去式和原形读音不同，但拼写相同）
使用过去式时，句子通常会与表示过去时间的词语搭配，例如 yesterday, last week, or last night。例如：
I went to the park yesterday. （我昨天去了公园。）
She was sick last Monday. （她上周一生病了。）
希望这些信息对你有帮助，