whether的用法和例句

Question

如题所述

Answer 1

1
在动词不定式之前只能用whether
.如:
例8
I
can't
decide
whether
to
stay.
我不能决定是否留下.
2
在whether
……
or
not
的固定搭配中.如:
例9
I
want
to
know
whether
it's
good
news
or
not
.
我想知道是否是好消息.
3
在介词后,只能用whether.如:
例10
His
father
is
worried
about
whether
he
lose
his
work
.
他的父亲担心是否会失去工作.
4宾语从句放在句首表示强调时,只能用whether
.如:
例11
Whether
they
can
finish
the
work
on
time
is
still
a
problem
.
他们是否能准时完成这项工作还是个问题.
5用if会引起歧义时,只用whether.如:
例12
Could
you
tell
me
if
you
know
the
answer

Answer 2

whether和if的用法区别
whether与if作“是否”讲，在用法上有相同之处，如：he
asked
me
whether/is
i
could
help
him.
i
want
to
know