Question

it s time to have lunch 是什么意思

Answer 1

It's
time
to
have
lunch
是什么意思
It's
time
to
do
sth.
表示“该是干某事的时间了”或“到了做某事的时间了”，所以这句话的意思是“该吃午饭了”
如果用
It's
time
that
we
had
lunch.
属于虚拟语气，意思是“早就该吃午饭了”，言外之意是到现在还没有。