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cut cut
begin began
come came
make made
build built
tell told
leave left
do did
Base form Past form
help helped turn turned like liked
dance danced
reply replied
carry carried
stop stopped
plan planned
travel travelled
一般过去时的
否定句及一般疑问句
I __ a teacher now.
I ___ a student one year ago.
am
was
was
am
was
was
is
He ___ a little fat now.
is
He ___ thin many years ago.