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1、Wordsure与certain的用法与区别 一、两者在用法上的相同点 两者都可用作表语,表示肯定或确信,有时可互换。互换的场合应留意以下几点用法: 1. 表示说话者的态度或看法 即表示说话者自己的态度或看法,其意为肯定会确定会。此时主要用法有: (1) 单独用作表语。如: One thing was sure certain: theyd be late. 有一件事是确定无疑的,他们会迟到。 (2) 后接不定式。如: Hes certain sure to win. 他肯定会胜利。 Theyre certain sure to need help. 他们确定需要关心。 If you do t
2、his, you are certain sure to be found out. 假如你这样做肯定会被发觉。 2. 表示句子主语的推断或信念 即表示句子主语对某一状况的推断或信念,其意为信任确信有把握等。此时通常用于以下结构: (1) 后接of about sth。如: He is certain sure of success. 他确信会胜利。 Are you certain of about that? 你对此有把握吗? (2) 后接 of doing sth。如: Our team is certain sure of winning. 我们队有把握赢。 You can be sur
3、e certain of his agreeing. 你可以放心他会同意。 比较同义句: He is certain sure of winning. =He is sure certain that he will win. 他自信会赢。 (3) 后接 that / whether / if 从句。如: I am sure certain that he is honest. 我确定他是诚恳的。 Im sure certain that its not your fault. 我敢确定这不是你的错。 Are you certain sure that this is the right ro
4、ad? 你确定这条路对吗? 注:当be sure certain为确定式或疑问式时,后接that从句;当be sure certain为否定式时,后接whether if从句。如: Im not sure certain whether he still works there. 我不能确定他是否还在那里工作。 I wasnt sure certain whether he would agree. 我不太确定他是否会同意。 He wasnt sure certain whether he would be able to get back in time. 他不能确定他是否能准时回来。 (4
5、) 后接其他从句。如: Im not sure certain where she lives. 我不能确定她住在哪里。 Im not certain sure who wrote it. 我不太清晰这是谁写的。 二、只能用certain的情形 以下状况通常只用certain,而不用sure: 1. 当句中用了形式主语或形式宾语 it 时。如: Its certain that hell come tomorrow. 他明天确定会来。 I thought it certain that he would be late. 我确定他会迟到。 Its certain that prices wil
6、l go up. 价格确定会上涨。 Its not certain how much it will cost. 这要花多少钱还不确定。 2. 当表示某一某些时。如: A certain Mr Green wants to see you. 有个叫格林先生的人想见你。 Certain plants are good to eat but others are not. 有些植物好吃, 而其他一些则不好吃。 三、只能用sure的情形 在 Be sure (not) to do sth.(肯定要或不要做某事)这类祈使句中通常不用 certain。如: Be sure not to forget i
7、t. 千万别遗忘啦。 Be sure to get there before nine. 务必在九点前到达。 Be sure to turn off the light when leave. 离开时肯定要关灯。 四、两者在习语中的用法 1. 用于 for certain / for sure, 意为确定地准确地等,两者可互换。如: I cant say for certain sure when he will come. 我不敢确定地说他什么时候来。 No one knows for sure certain what happened to her. 没有人准确地知道她出了什么事。 2. 用于 make certain / make sure,意为弄清晰弄得有把握,两者可互换。如: They made certain sure (that) they werent late. 他们有把握不迟到。 I think theres a train at 10:40, but youd better make certain sure of it. 我想10:40有趟火车,但你最好去核实一下。 4