sure 与certain有何区别?
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sure 与certain有何区别?
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sure和certain是中学英语中的两个基本单词,均有“肯定,确信,有把握”之意,用法也很相似,大多数情况下可以互换,但两者之间也存在着差异,在此作总结归纳如下: 一、两者的相同点: 1.用于“Somebody +be sure /certain about /of+...”结构,意为“某人确信某事,对某事有把握”,介词后面多跟名词和代词.如: I think so,but I”m not sure /certain of/ about it.我是这么想的,但没有把握. 2.用于“Somebody +be sure / certain +从句”结构,意为“某人对……有把握、对……能确信”.如: You may be sure /certain that he is honest.你可以确信他的诚实. Are you sure / certain where he lives?你能肯定他住在哪里吗? I”m not sure /certain if he will come tomorrow.我对他明天是否会来没有把握. 3.用于“Somebody +be sure /certain +连接代词/连接副词/whether to do something”结构,意为“某人对……有把握、对……能确信”.如: Are you sure /certain what to do next?你对下一步干什么有把握吗? I”m not sure how to translate the sentence.我对如何翻译这个句子没有把握. I was not sure whether to go.我无法确定是去还是不去. 4.用于“Somebody /something +be sure /certain +to do something”结构,意为“……一定会……,肯定会……”.如: He is sure /certain to be back soon.他一定会很快回来的. The problem is sure /certain to be solved.这个问题肯定会得到解决. 5.用于“Somebody +make sure /certain +从句”结构,意为“某人确定,搞清楚”.如: She made sure /certain that she had turned off the gas.她确信已经把煤气关上了. You must make sure /certain when the train will leave.你必须搞清楚火车什么时候出发. 注意:在以上情况下,sure与certain可以换用,但sure常表示说话人的感觉,可能有怀疑、猜测成份,语气一般.而certain则表示说话人有充分的理由根据,语气更肯定、坚决. 二、两者的不同点: 1.在“It+be certain +to do something /从句”结构中,It是形式主语,此时一般不用sure.如: It is certain to take him a lot of time.肯定会占用他很多时间. It is certain that two plus two makes four.二加二得四是确定无疑的. 2.“Be sure +to do something”结构,用于祈使句,这时一般不用certain.如: Be sure not to forget it.千万别忘了. 3.作定语时,sure表示“可靠的,无疑的”.而certain修饰可数名词时,意为“某一,某些”,修饰抽象名词时,意为“有点,有些”.如: The student made a sure answer.学生作出了确凿的回答. A certain Brown is waiting for you at the gate.门口有个叫布朗的在等着你. Certain students have failed in the test.有些学生测验没及格. There was certain coldness in her attitude towardsme.她对我的态度有点冷淡. 4.在口语中,sure可作副词,用在肯定答语中,相当于surely、certainly, of course,而 certain不能用作副词,如:
满意请采纳
满意请采纳
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