“很管用”的英语表达是：
1. It works for me. 对我很管用。
例句：
I do yoga for half an hour every day, it works for me.
我每天做半个小时瑜伽，对我很管用。
2. Effective 有效的；起作用的。
例句：
This medicine is very effective.
这药很管用。
“不关你的事”用英语怎么说？
“不关你的事”的英语表达是：It's none of your business。
例句：
Don't be so nosy, it's none of your business.
别管那么多闲事，这与你无关。
“别那样和我说话”用英语怎么说？
“别那样和我说话”的英语表达是：Don't talk to me like that。
例句：
I don't know what I did hurt you. However please don't talk to me like that.
我不知道我对不起你什么，但是别那样和我说话。
“别发牢骚”用英语怎么说？
“别发牢骚”的英语表达是：Stop complaining。
例句：
Stop complaining. Let's get down to work.
别抱怨了，赶紧工作吧。
