1.I've done my best.(我已尽力了); 2.I'm really dead.(我真的要累死了); 3.That's something.(太好了,太棒了); 4.You are a great help.(你帮了大忙); 5.I couldn't be more sure.(我再也肯定不过); 6.I am behind you.(我支持你); 7.Mind you!(请注意!听着)可仅用Mind