發誓英文：Swear.
動詞：vow; pledge; swear (an oath); make/take an oath.
常用短語：
1、發誓戒煙。
(make a) vow to give up smoking; pledge oneself to quit smoking; swear off smoking.
2、發誓絕對保密。
swear absolute secrecy; be pledged to secrecy.
3、發誓效忠。
pledge allegiance (to).
4、發誓永不回去。
swear never to return.
5、發誓永遠愛她。
swear eternal love to her.
6、手按《聖經》發誓。
swear on the Bible; swear with one’s hand (resting) on the Bible.
7、以名譽發誓。
swear by/on one’s honour.
8、法官提醒證人她已發過誓要講真話。
The judge reminded the witness that she was under/on oath.
9、我不能告訴妳她的名字，我向她發過誓。
I’ve given her my word, I can’t tell you her name.
10、他發誓要為烈士報仇。
He vowed to avenge martyrs.
發誓雙語例句：
1、They swore never to be separated.
他們發誓永不分離。
2、“ I pledge before God I didn't do it,” said the old man.
這老頭說：“我向老天爺發誓，這不是我幹的。”
3、I could kill you! I swear I could!
我想殺了妳!我發誓我真想殺了妳!
4、I swear I've told you all I know.
我發誓我已經把我所知道的全都告訴妳了。
5、'I'll kill him,' she vowed.
“我要宰了他，”她發誓說。
6、I vowed then, no matter what, I would never be like those people.
於是我發誓，無論如何，我和他們那種人都不會成為壹丘之貉。
7、I had to admire David's vow that he would leave the programme.
戴維發誓要離開這個項目，我不得不對他表示欽佩。
8、I solemnly vowed that someday I would return to live in Europe.
我鄭重發誓，總有壹天我將回到歐洲生活。