not have a clue
成語所屬單字clue
not have a clue — 慣用語
1. to know nothing about something, or to be completely unable to understand or do
1.慣用語
釋義
一無所知；完全不懂
to know nothing about something, or to be completely unable to understand or do something.
例句
Tomás did not have a clue how to fix the broken bicycle chain.
When the teacher asked about photosynthesis, Mei did not have a clue what to say.