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enjoy doing sth
be busy doing sth
It`s+adj +to do sth .
try doing
ask to do
forget doing
forget to do
remember to do
remember doing
let do
make do
like doing sth
start to do sth
start doing sth
finish doing sth
(一般現(xiàn)在時(shí)態(tài)）be doing
would like to do
spend......(in) doing sth
look forward to doing sth
want to do sth
decide to do sth
It takes sb sometime to do sth
It......to do sth
be going to do sth/will do（一般將來時(shí)態(tài)）
Thank doing sth