whether ·····or not和whether·····or的意思有什么区别

Question

whether ·····or not和whether·····or的意思有什么区别

Answer 1

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.