be to do sth.和will do sth.和be about to do sth. 有什么不同?

Question

如题所述

Answer 1

be
to
do表示一种命中注定会发生的事情
will
do
表示一种个人意愿（将会做某事，这个主要和be
going
to
do区分）
be
about
to
do表示即将、马上、眼瞅着要做某事
例句：
1.
Two
boys
were
saying
goodbye
to
each
other
without
knowing
they
were
not
to
meet
again.
2.
I'll
go
to
London.
3.
The
telephone
rang
when
I
was
about
to
go
out.本回答被提问者采纳