是不是
#857 by frequency
is or is not (used to form yes-no questions)
Examples
他是不是医生?
这是不是豆腐?
Learn 是不是 the way it sticks: in sentences built from words you already know, scheduled so you review right before you'd forget.
Start your free weekDefinitions adapted from CC-CEDICT (CC BY-SA 4.0, modified). Example sentences from Tatoeba (CC BY 2.0 FR). Frequency ranks from the BCC corpus. Full credits on the Attributions page.