这些动词都含“否定、否认”，“反驳、反对”之意。
contradict : 指肯定地否认、反对或反驳某事，坚持相反的意见。
- If you're both going to lie, at least stick to the same story and don't contradict each other!
如果你们俩都要撒谎，至少也要口径一致，不要互相矛盾！ - He kept contradicting himself when we were arguing - I think he was a bit confused.
我们争论时他一直自相矛盾——我想他有点糊涂了。 - How dare you contradict (me)!
你怎么敢顶撞我！ - Recent evidence has contradicted established theories on this subject.
关于这一问题，最近发现的证据与已有理论相抵触。
deny : 普通用词，侧重否认意见或言论的真实性，尤指否定他人的指控或责难。
- He will not confirm or deny the allegations.
对那些指控他将不置可否。 - Neil denies that he broke the window, but I'm sure he did.
尼尔不承认是他打破了窗户，但我敢肯定是他干的。 - Neil denies breaking the window.
尼尔不承认是他打破了窗户。
oppose : 普通的广泛用词。指不作争论或不提出论据而无理由地反对；也指任何温和、有理由的反对或否定。
- The proposed new testing system has been vigorously opposed by teachers.
实行新考试制度的提议遭到了教师们的强烈反对。 - Most of the local residents opposed the closing of the school.
当地大多数居民反对关闭这所学校。 - I would certainly oppose changing the system.
我当然会反对改变这一制度。
refute : 语气较强，强调凭推理或证据驳斥一项主张或言论。
- to refute a person/theory/argument/claim
驳斥一个人／理论／论点／说法 - She refutes any suggestion that she behaved unprofessionally.
谁要是表示她不在行，她都予以反驳。 - It was the kind of rumour that it is impossible to refute.
这是那种让人根本没法批驳的谣言。 - Isabelle is quick to refute any suggestion of intellectual snobbery.
伊莎贝尔对于任何关于她恃才傲物的暗示都迅速予以否认。
