如题所述
be sure of/about + 名词,代词,动名词 意为确信,对…有把握 表示对客观事物有肯定的认识和判断,主语必须是人。 e.g. As Jordan joined our team, we are sure of winning the game this time. 另外我们还要注意一些别的表达: ① be sure to … 一定,肯定 后接不定式往往表示局外人的推测,评论,主语不一定是人。 e.g. It's sure to rain tomorrow. 比较: a. He is sure to live to ninety. 他肯定可以活到九十岁。 b. He is sure of living to ninety. 他自信可以活到九十岁。 ② Be sure to 用于祈使句时,"务必,切望"解。 ③ be sure 接that从句时,意为:认为…一定会,主语必须是人,连词that可以省略,be sure 后面还可以接由whether, where, when 或 who 等引导的名词性从句,这时,主句通常是否定形式。E.g. 我不能肯定今晚是否有空。 I am not sure whether I will be free or not tonight.
温馨提示:答案为网友推荐,仅供参考
第1个回答 2014-05-02
■ be sure of (1) 对……有把握。如: Are you sure of these facts? 你对这些事实有把握吗? 注:有时说成 be sure about。如: I’m not sure of [about] that. 我对此没有把握。 (2) 一定会得到……。如: You are sure of a warm welcome. 你一定会受到热烈欢迎。 He is sure of passing the exam if he works hard. 只要他用功,他就一定能考及格。 ■ be sure to do sth 一定要(会)做某事。如: Be sure to lock the door when you leave. 你离开时一定要锁门。 You’re sure to fail if you do it that way. 你要是那样做,你肯定会失败。 注:有时可与 be sure that-clause 转换。如: Be sure you finish it today. / Be sure to finish it today. 你今天一定要把它完成。
第2个回答 2014-05-02
be sure of doing 做某事有把握 be sure to do sth 肯定会做某事
第3个回答 2014-05-02
Be sure of+名词 Be sure to+动词