如题所述
be sure of doing:做某事有把握
be sure to do sth:肯定会做某事
因为后面跟的内容不一样。
be sure that后面加一句完整的句子。如：I'm sure that Simon lives here. Simon lives here. 是完整的句子。
be sure to do sth. 如：They are sure to be late. be late 是一个动词而不是句子
be sure of+名词 如：We're sure of his innocence.
be sure that=be certain that
be sure to do sth:肯定会做某事
因为后面跟的内容不一样。
be sure that后面加一句完整的句子。如：I'm sure that Simon lives here. Simon lives here. 是完整的句子。
be sure to do sth. 如：They are sure to be late. be late 是一个动词而不是句子
be sure of+名词 如：We're sure of his innocence.
be sure that=be certain that
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第1个回答 2013-10-18
更正楼上这位
be sure that 不等于 be certain that
前者人做主语 而后者应该用it做主语
例子：
I'm sure that he'll be late.我确定他会迟到。
It's certain that he'll be late.他肯定会迟到。本回答被网友采纳
be sure that 不等于 be certain that
前者人做主语 而后者应该用it做主语
例子：
I'm sure that he'll be late.我确定他会迟到。
It's certain that he'll be late.他肯定会迟到。本回答被网友采纳
第2个回答 2013-10-18
1. 用作形容词
1)常用于be sure of, be sure to do, be sure that 结构中。例如：
You may be sure of his honesty. /You may be sure that he is honest. 你可以确信他的诚实。
I'm sure of winning the game. 我有把握能赢得比赛。
He is sure to be back soon. 他一定会很快回来。
Be sure not to forget it. 千万别忘了。
注：be sure of 与be sure to do的区别：
be sure of 和be sure that一样,主语是人, 主语感到“有把握；确信”； be sure to do的主语可以是人,也可以是物, 表示说话人推测“一定；必然会”。例如：
He is sure of his success. /He is sure that he will succeed. 他确信他会成功。
He is sure to succeed. 他一定会成功。(说话人的看法)
1)常用于be sure of, be sure to do, be sure that 结构中。例如：
You may be sure of his honesty. /You may be sure that he is honest. 你可以确信他的诚实。
I'm sure of winning the game. 我有把握能赢得比赛。
He is sure to be back soon. 他一定会很快回来。
Be sure not to forget it. 千万别忘了。
注：be sure of 与be sure to do的区别：
be sure of 和be sure that一样,主语是人, 主语感到“有把握；确信”； be sure to do的主语可以是人,也可以是物, 表示说话人推测“一定；必然会”。例如：
He is sure of his success. /He is sure that he will succeed. 他确信他会成功。
He is sure to succeed. 他一定会成功。(说话人的看法)
