remember

to

do

sth

记得去做某事（还未做）

remember

doing

sth

记得做过某事

forget

to

do

sth

忘了去做某事

forget

doing

sth

忘了做过某事

stop

to

do

sth

停止这件事去做另外一件事

stop

doing

sth

停止做这件事

start

to

do

sth

开始做另一件事

start

doing

sth

开始继续做这件事