Give sb the benefit of the doubt: To believe sb good about sth, rather than sth bad, when you have the possibility of doing either; To decide that you will believe someone, even though you are not sure that what the person is saying is true. As in Something didn’t seem quite right, but I decided to give him the benefit of the doubt.
中文释义：give sb the benefit of the doubt，先做无过推论，先往好处想。如果你对某人产生了怀疑，但是你仍然决定相信对方，这时候你就是在“give sb the benefit of the doubt”. 这个短语最初是个法律概念，跟字面意思一致，它指的是在一个案件出现疑点的时候，疑点利益（benefit of the doubt）归于被告。例句：I’d like to give Mary the benefit of the doubt. （我选择相信玛丽，我想把事情往好处想。）