N3 — outside your level filter
Is said whole, with nothing composed onto it and takes no だ／です, so there are no forms to conjugate.
外食をする
gaishokuwosurueat outN3expression
Example sentences2
忙しいときは外食をすることが多い。
isogashii toki wa gaishoku o suru koto ga ooi.
When I'm busy, I often eat out. neutral
たまには外食をするのもいいもんだな。
tama ni wa gaishoku o suru no mo ii mon da na.
It's nice to eat out once in a while, isn't it. casual