adverb · used in a rhetorical question to mean "when" or "how," implying that something has never happened or is not the case

他何尝意识到自己给别人带来了麻烦？

adverb · used in a rhetorical question, often followed by a negative, to emphasize that the opposite of a statement is true

我何尝不希望早点完成任务，只是目前困难重重。