腾讯字体下载:英语 词组 辨析

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be sure of 与 bu sure to 有什么不同?

be sure of sth./sb. = have confidence in sth.
对…有充分的信心,
e.g. He is quite sure of himself.

sb. be sure to do sth. = It is sure that sb. will do sth.
…肯定会做…
e.g. Jimmy is sure to arrive on time.