1. I'm on a diet. 我正节食减肥中。

　　2. I want to shed some pounds. 我想要减肥。

　　3. I've put on some weight. 我变肥了。

　　4. I have gained a lot of weight. 我发福了很多。

　　5. Have you been losing weight? 你最近在减肥么?

　　6. I should cut down on snacking. 我不能再吃零食了。