我发誓用英语

IpledgedmywordthatIwouldneverbreakmypromise.我发誓我决不毁约。Ipledgedmyselftoprotecther.我发誓要保护她。IswearI'llnevertellanyone.我发誓不告诉任何人。Uponmysoul,Iaminnocent.我发誓,我是清白无辜的.Uponmysoul,Iaminnocent.我发誓，我是清白无辜的。BeforeGodIswearIaminnocent..在上帝面前我发誓我是无辜。IhavesaidnothingthatIamnotreadytoattest.我发誓，我说的话句句属实。God'struth.绝对的真理；我发誓，是真的。I'veswornoffsmoking.我已发誓戒烟。Iamunderavownottodrinkwine.我已发誓戒酒。Ipromisetokeepyouinformed.我保证通知您。Givemeyourword.你要向我保证Iinsurethatyouwillsucceed.我保证你会成功。I'llswearforhishonesty.我保证他是个老实人。Ipromisetorespectyourwishes.我保证尊重你的意愿。IpledgemyselftofulfilthepromiseIhavemade.我保证实践自己的诺言。IpledgemyselftofulfilthepromiseIhavemake.我保证实践自己的诺言。Iwagerthatitshallbeso.我保证（它）会这样。Ididn'ttellanyone,onmyoath.我保证我没有告诉过任何人。I'llundertakeforyoursecurity.我将保证你的安全。

I swear /I promise

i swear to god~~~~~

I promise

Iswear我发誓-------------------------Ipromise我保证-------------------------Iswear的语气更强烈，更郑重一些