Definitely. 肯定是如此.
Certainly. 那是一定的.
Sure! 对呀! Absolutely. 绝对是的.
Of course. 那当然啦.
Without a doubt. 毫无疑问的. A:You think I wouldn't dare? 你以为我不敢吗?
B:You bet! 正是如此! 当然!
