I want.. 和 I wanted... 的差別在哪裡？如果不好說明，請提供一些例句。

In addition to the normal past tense use, we sometimes use wanted to soften an indirect request. For example, "I wanted to use your car to pick up some dinner...would that be alright?" or "Hey, real quick, I wanted to get your number before you go." Using "want" in those sentences seems too direct and assertive for most people, even though it makes more sense technically.