make sure 确信;证实
for sure adv. 确实;毫无疑问地
sure of 确信…的
sure enough 果然,果真
are you sure 肯定吗;确定要… sure about 肯定;对…确信的
not so sure 不太确定
as sure as 千真万确地;和…一样肯定无疑
be sure of oneself v. 自信;有自信心
make sure of 确定;确保;尽力到 pretty sure 相当肯定
that's for sure 那是肯定的
be sure to do 一定某事;确定