be sure可以加名词、动词不定式以及that引导的从句。即:1、be sure of sth:对某事很确定;2、be sure to do sth:一定会做某事;3、be sure that……:对某事很确定,后面接that引导的句子,that也可以省略掉。
be sure后面加什么
1、be sure后面跟介词about
例句:Are you sure about his feeling for Mary?
译文:你可以确定他对玛丽的感情吗?
例句:---What do you think of Mike?
---I'm not quite sure about him.
译文:---你认为迈克怎么样?
---我对他不怎么信得过。
2、be sure后面跟介词of
例句:I'm sure of one thing: he can finish the work on time.
译文:我确信一件事:他能按时完成工作。
例句:Are you sure of winning the next match?
译文:你有把握赢得下一场比赛吗?
3、be sure 后面跟动词不定式to do sth
例句:They are sure to go on a trip to the Great Wall next month.
译文:他们肯定下个月去长城旅行。
例句:Be sure to turn off the lights when you leave the house.
译文:你离开家时务必要关灯。
4、be sure 后面跟that从句
例句:Are you sure (that) he will go to the park with Mike this weekend?
译文:你确信这个周末他会和迈克一起去公园吗?
例句:Mary is sure that she will succeed in the end.
译文:玛丽确信她最后一定会成功。
5、be sure 后面跟if/whether从句
例句:I'm not sure if she is going to visit us.
译文:我拿不准她是否打算来拜访我们。
例句:She's not sure whether she will give you a hand or not.
译文:她拿不准要不要助你一臂之力。
6、be sure 后面跟wh-从句
例句:I'm not sure who will attend the meeting.
译文:我不确定谁会参加会议。
例句:Mike isn't sure when she will go to the movies next week.
译文:迈克不确定她下周什么时候去看电影。
sure的用法总结
一、作形容词,意为“确信的;肯定的”
1、be sure of/about对……有把握
I'm sure of/about the test.
我对这次考试很有把握。
2、make sure “确保;确认;查明”,指将某事弄清楚。
I have made sure that he is honest.
我很清楚他很诚实。
be sure对某事或某种情况有把握,常译为“确信”。
I'm sure that he is honest.
我相信他很诚实。
有时可互换:
Make/Be sure that you have taken your key when you leave the room.
当你离开房间时,要确保你带了钥匙。
3、be/make sure to do sth.都表示"一定要做某事",make sure通常用于祈使句,be sure则不受此限定。
Make sure to come here on time.
一定要准时来这儿。
Be sure to take good care of the baby.
一定要照顾好宝宝。
I'm sure to come here on time.
我一定准时来这儿。
4、be sure of与be sure that可以替换。
I'm sure of success.=I'm sure that I will succeed.
我一定会成功的。
二、作副词,意为“当然,表示赞同”,相当于of course
- Could you please open the window?
-你能把窗户打开吗?
-Sure.
-当然可以。
sure与certain的区别
一、certain 形容词。意思是“相信、肯定、一定”。在句中多作表语。一般情况下可以和作形容词时的sure换用。在口语中语气要比sure强。可以用It is certain that,但不可以用It is sure that.例如:
Are you certain that you locked the door ? 你肯定把门锁了吗?
It is certain that thousands more people will die in the famine. 肯定还有数千人将死于饥荒。
He is certain to return. 他肯定会返回来。
二、sure形容词、副词。作形容词时意思是“(作表语)肯定、有把握;(跟不定式)一定会、准会;(作定语)有把握的、可靠的、肯定的”。作副词时表示意思是“肯定地、当然”。这种用法在美国尤为普遍。例如:
I was not sure what I ought to do. (表语跟从句)我不能肯定我该做什么。
He is sure to refuse. (表语跟不定式) 他一定会拒绝。
You may be sure of his honesty. (表语跟of短语)你也许会相信他的诚实。
Put it in a sure place. (定语) 把它放在一个可靠的地方。
Sure I will help you. (状语) 当然,我会帮助你的。
此外,certain和sure后跟不定式与后跟of+动名词所表达的意思是不同的:跟不定式表示别人“相信”句子的主语,即含被信之意;跟of+动名词则是表示句子的主语“相信”,即含自信之意。例如:
He is sure of winning. 他自信会胜He is sure to win.(他人,也许是说话人相信)他肯定会胜。