动词过去式
常规
do - did - done
be/am/is/are - was/were - been
will - would
can - could
shall - should
may - might
have（has）— had—had
日常
看
look - looked - looked
see - saw - seen
find - found - found
听
hear - heard - heard
说
say - said - said
tell - told - told
talk - talked - talked
其他动作
think—thought—thought
buy— bought—bought
pay—paid—paid
feel—felt— felt
make—made—made
understand—understood—understood
give—gave—given
choose—chose—chosen
write—wrote—written
come—came—come
run— ran—run
go - went - went
know - knew - known
get - got - gotten
核心过去式/过去完成时Past tense / past perfect
原文：https://www.cnblogs.com/vhyc/p/12286970.html