set out 加to do还是doing?

set out 加to do还是doing?
set out 加to do还是doing?

set out 加to do还是doing?
set out to do sth
=set about doing sth
开始,着手干什么
不懂追问*^__^*

to do
打算，计划：
to set out to write a novel
打算写一部小说

set out to do; be set out doing .