关于doubt（怀疑）的用法doubt后面可以加特殊疑问词吗?如how?（我知道可以加if,whether之类的词）I doubt how to achieve it.可以这样说吗?

关于doubt（怀疑）的用法doubt后面可以加特殊疑问词吗?如how?（我知道可以加if,whether之类的词）I doubt how to achieve it.可以这样说吗?
关于doubt（怀疑）的用法
doubt后面可以加特殊疑问词吗?如how?（我知道可以加if,whether之类的词）
I doubt how to achieve it.可以这样说吗?

关于doubt（怀疑）的用法doubt后面可以加特殊疑问词吗?如how?（我知道可以加if,whether之类的词）I doubt how to achieve it.可以这样说吗?
doubt既可用作动词,也可用作名词.现将其用法归纳如下.
一、doubt用作动词
1.doubt+名词或代词.例如：
I doubt his word.我怀疑他的话.
They doubted him before.他们以前曾经怀疑过他.
2.doubt+宾语从句
（1）在否定句和疑问句中,doubt后面接that引导的宾语从句.例如：
I don”t doubt that he can finishthe task on time.我相信他能按时完成任务.
Do you doubt that she willsucceed?你怀疑她会成功吗?
（2）在肯定句中,doubt后面一般接whether或if引导的宾语从句.例如：
I doubt whether they can swimacross the river.我怀疑他们能否游过河去.
He doubts if she will keep herword.他不敢肯定她是否会遵守诺言.
注意：在肯定句中,doubt后面也可以接that引导的宾语从句,但表示疑虑较大或“不相信”.例如：
We doubt that they can completethe work ahead of time.我们不相信他们能提前完成这项工作.
I doubt that he will come.我看他未必会来.
二、doubt用作名词
1.doubt常与about/of/as to/on等介词连用.例如：
There is no doubt aboutit.此事无可怀疑.
I have no doubt of hisability.对于他的能力我毫不怀疑.
She has her doubts as to thisbeing true.她怀疑这事是否真实.
No one has any doubt on thispoint.这一点没有人会怀疑.
2.doubt后面接同位语从句
（1）doubt用在否定句中,后面接that引导的同位语从句.例如：
I have no doubt that he willsucceed.我相信他会成功的.
There is no doubt that they willagree with you on this matter.毫无疑问,他们在这件事上会同意你的意见的.
（2）doubt用在肯定句中,后面接whether引导的同位语从句.注意不可以用if替换whether.例如：
He had his doubts whether theywould give him another chance to have a try.他不能肯定他们是否会再给他一次机会试一试.
There is some doubt whether theirfootball team will win the match.他们的足球队会不会赢得这场比赛还不能肯定.
3.由doubt组成的一些短语
（1）indoubt怀疑；拿不定主意.例如：
We are in doubt(about) what to donext.我们不知道下一步要做什么.
When in doubt about the meaningof a word,consult the dictionary.当你对一个词的意义没有把握时,就查一下词典.
（2）no/without/beyond doubt无疑地；必定；当然.例如：
It is no doubt difficult.这无疑是困难的.
No doubt he didn”t mean to hurtyou.他肯定不是有意伤害你的.
Without doubt this is thebest.无可置疑,这是最好的.
Beyond doubt he will give yousome advice on your study.毫无疑问,他会给你的学习作一些指导的.
（3）makeno doubt of 对……毫不怀疑.例如：
We make no doubt of hissincerity.我们对他的诚意毫不怀疑.
She made no doubt of what he hadsaid.她对他所说的话毫不怀疑.
（4）throw/cast doubt on使人对……产生怀疑.例如：
Galileo”s experiments threwdoubt on Aristotle”s theory of falling objects.伽利略的实验使人们对亚里士多德的落体理论产生了怀疑.
What he had done cast doubt onhis honesty.他的所作所为使人们对他的诚实产生了怀疑.
希望能够帮到楼主

doubt 1
/ daut; daʊt/ n
[U, C] ~ (about/as to sth); ~ (as to) whether... (feeling of) uncertainty or disbelief 怀疑; 不确定; 不信任: There's some doubt about his suitability for the job. 他是否适...

全部展开

doubt 1
/ daut; daʊt/ n
[U, C] ~ (about/as to sth); ~ (as to) whether... (feeling of) uncertainty or disbelief 怀疑; 不确定; 不信任: There's some doubt about his suitability for the job. 他是否适合该工作有些疑问. * There is (no) room for doubt. （没）有怀疑的余地. * I have grave doubts about her honesty. 我很怀疑她是否诚实. * The latest scientific discoveries cast doubt on earlier theories. 科学上的最新发现使我们对以前的学说产生怀疑. * She had her doubts (as to) whether he would come. 她无法确定他是否来. * Although a very religious man, he is still troubled by occasional doubts. 他虽然笃信宗教, 但有时仍感到迷惘.
[U] ~ about sth/that. . . (used after negatives to emphasize conviction 用於否定词后以强调深信不疑) reason for not believing sth 不相信: There's not much doubt about it, ie It is almost certain. 那件事情没有什麽可疑之处. * I have no doubt that you will succeed. 我肯定你能成功.
(idm 习语) beyond a/any `doubt; beyond all (possible) `doubt certainly 无疑地: She was beyond all doubt the finest ballerina of her day. 她无疑是她那个时代最优秀的芭蕾舞演员. give sb the benefit of the `doubt => benefit. in `doubt uncertain; undecided 不肯定的; 不确定的: Their acceptance of the contract is still in doubt. 他们是否接受那合同还说不准. * If in doubt, don't, ie Don't act unless you're certain. 没有把握就不要做. ,no `doubt very probably 无疑地; 很可能: No doubt he means to help, but in fact he just gets in the way. 他确实是想帮忙, 然而事实上却只是帮倒忙. without (a) `doubt certainly 无疑地; 确实地: He is without doubt the cleverest student I've ever taught. 他确实是我所教过的学生中最聪明的. doubt 2
/ daut; daʊt/ v [I, Tn, Tf] feel uncertain (about sth); question the truth of (sth) （对某事物）无把握, 有怀疑: It is human to doubt. 怀疑是人的天性. * Do you doubt my word (ie think I am not telling the truth) ? 你怀疑我的话吗? * I don't doubt that he'll come, ie I'm sure he will. 我确信他会来. * I doubt whether he'll come. 我不敢肯定他来不来. * I doubt if that was what he wanted. 不知道那是不是他想要的. > doubter n.
# ,doubting `Thomas person who refuses to believe sth until he has clear proof 有真凭实据才相信某事物的人: She's a bit of a doubting Thomas she won't believe you're back till she sees you. 她是个眼见为实的人--除非她亲眼看见你, 否则绝不会相信你已经回来.

收起