if not
成語所屬單字if
if not — 慣用語
1. Used to introduce an alternative when the previous condition is not true.
1.慣用語
釋義
如果沒有
Used to introduce an alternative when the previous condition is not true.
例句
Are you coming to the party? If not, let me know.
We can meet on Friday; if not, Saturday works too.