adj.肯定的；确信的；必定；可靠的；沉着自信的
adv.当然；确实地；无疑地；不用客气
I think you are not quite sure about it. 我认为,你们对这一点并不能完全肯定。
I'm sure you'll want a go when you see it. 我敢说你看到了就想试一下。
I can't be sure, but I believe it worths trying. 我不能确定,但我确信这值得一试。
The news is sure to overset him. 这条消息必定会使他心神不安。
Hard work is a sure avenue to success. 勤奋是可靠的成功之道。
He's not so sure of himself these days. 他近来不大有自信。
They had never seen her so sure of herself. 他们从未看见过她这样自信。
用作副词 (adv.)It sure was a cold night. 的确是个寒冷的夜晚。
Nobody knows the cause of the fire for sure. 没有人确切地知道大火的原因。
sure表示“无疑的,确信的,有把握的”,指主观上对某事相信无疑,不涉及有无客观根据。在句中作表语。
“be sure+不定式”往往表示推测的口气,主语不一定是人,表示“一定会…的”“必定会…的”。
sure还可表示“无可置疑,千真万确”“不偏离的,不动摇的”。
sure用作定语时,表示“经证明可靠的,可信的”。
sure没有比较级与最高级形式。
sure还可用作副词,表示“的确,当然”。例如:It sure was cold.确实很冷!I said it would happen, and sure enough it did.我说过要有这样的事发生,果然如此。
