对我放心英文

don't worry. 口语一般都这么说，没人用别的

专业翻译大使 专业英语翻译~你也该学学了..

You may rest assured.Make yourself easy (=Make your mind easyyou may rest assured that...请放心我们一定遵守诺言。Please feel assured that we will abide by our promise.请放心，我们会准时完成的Rest assured that we will finish on time.

also take it easy

叫别人放心，别怕： Dont worry,....叫别人放心，慢慢来： take it easy表示自己放心，你。。。。我就放心了，，，： be relax

You may rest assured例如：请放心，我决不辜负你的。 You may rest assured.I'll not let you downPlease feel assured 例如：请放心我们一定遵守诺言。 Please feel assured that we will abide by our promise.

You may rest assured. Make yourself easy (=Make your mind easy you may rest assured that... 请放心我们一定遵守诺言。 Please feel assured that we will abide by our promise. 请放心，我们会准时完成的 Rest assured that we will finish on time.

please don't worry 已经比较准确了

ok或者Don't worry