•It was a real shock, the first time I heard my mother swear.我第一次听见母亲骂人时，觉得非常震惊。

•When the taxi driver started to swear at him, he walked off.当计程车司机开口骂他时，他干脆走开。

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•I don't know anything about what happened, I swear (it).我发誓我对所发生的事一无所知。

•[+ (that)] You might find it difficult to believe, but I swear (that) the guy just came up to me and gave me the money.你可能觉得这难以置信，但我发誓，那个人确实走过来把这些钱给了我。

•informal She swore blind (= promised definitely) (that) she didn't know what had happened to the money.她信誓旦旦地说不知道钱哪里去了。

•[+ to infinitive] New gang members must swear to obey the gang leaders at all times.新的帮会成员必须发誓在任何时候都服从帮会头目。

•In some countries, witnesses in court have to swear on the Bible.在有些国家，出庭证人必须手按《圣经》宣誓。

•I swore an oath to tell the truth, the whole truth and nothing but the truth.我发誓我说的都是实情，绝对没有半点谎言。

•A few of us knew what was going to happen, but we were sworn to secrecy (= we were made to promise that we would keep it a secret).我们几个人都知道会发生甚么事，但我们已发过誓要对此保密。

•I think his birthday is on the 5th, but I wouldn't/couldn't swear to it (= I am not completely certain about it).我想他的生日是五号，但并不完全肯定。

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•My dad swears by these vitamin pills.我爸爸很相信这些维他命丸。

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•The next witness was sworn in.下一位证人也已经宣誓了。

•Clinton was sworn in as President.克林顿宣誓就任总统。

•She had a good seat at the President's swearing-in ceremony.她在总统宣誓就职仪式上占了个好座位。

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•After years of addiction, he swore off drugs completely.上瘾几年后，他发誓彻底戒毒。