you bet!
used instead of 'yes' to emphasize that sb has guessed sth correctly or made a good suggestion 的确;当然
'Are you nervous?' 'You bet!'
"你紧张吗?""这还用说!"
don't mention it:别提了
more often than not:usually; in a way that is typical of sb/sth 通常;往往;一贯
As often as not, he's late for work.
他上班往往迟到.