sure

‘That’s Sarah’s cousin.’ ‘Are you sure?’.“那是萨拉的表妹。”“你肯定吗？”

‘What time does the show start?’ ‘I’m not sure.’.“表演什么时候开始？”“我说不准。”

My mother, I felt sure , had not met him before..我敢肯定我妈妈以前从未见过他。

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,你肯定吗；你确定要…

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；尽力做到

pretty sure,相当肯定

that's for sure,那是肯定的

be sure to do,一定做某事；确定做