一、作“是……还是……”解时,whether表示一种选择,其后可以跟
介词短语或不定式短语.
She
made
the
mistake
whether
by
accident
or
by
design.不知她是偶然还是故意去犯这个错误的.
二、作“是否,会不会”解时,whether可用来引导
名词性从句,即
主语从句、宾语从句、表语从句和同位语从句.
(1)Whether
they
consider
this
opinion
or
not
is
not
clear.(=
It
is
not
clear
whether
they
consider
this
opinion
or
not.)
他们是否考虑这个意见还不清楚.