Are you sure?
你有成功的把握嗎?
Are you sure about your success.
你肯定他會(huì)來嗎?
Are you sure he'll come?
我肯定。
I'm certain.
我確信他是正確的。
I'm positive he's correct.
我百分之百肯定他愛上了你。
I'm one hundred percent sure he's falling in love with you.
絕對(duì)肯定。
Absoulutely certain.
我敢打賭。
I bet.
我與你打賭一百元。
I bet you one hundred yuan.
一定是這樣。
It can't be otherwise.
我對(duì)此確信無疑。
I have no doubt about it.
吸煙有害健康是確信無疑的。
It's certain that somking is harmful to health.
我不肯定。
I'm not sure.
我不敢肯定。
I can't be certain.
我不肯定他是否勝任這工作。
I'm not sure if he is qualified for that job.
我懷疑他們是否能按時(shí)完工。
I doubt if they can finish the job in time.
我不敢肯定的說。
I can't say for sure.
我說不準(zhǔn)。
I really couldn't say.
我下不了決心。
I can't make up my mind.
這很難說。
That's hard to say.
我覺得腦里一團(tuán)糟。
I feel in such a mess.