whether

US /ˈweð.ɚ/
UK /ˈweð.ɚ/
"whether" picture
1.

是否

expressing a doubt or choice between two alternatives

:
I'm not sure whether I should go or stay.
我不確定是否應該去還是留。
She asked whether he was coming to the party.
她問他是否會來參加派對。
2.

是否

introducing an indirect question, often with 'or not' implied

:
Let me know whether you can make it.
告訴我你是否能來。
It doesn't matter whether it rains or shines.
下雨還是晴天都無所謂。