How could I lose weight?
我怎么样才能减肥呢？

lose weight 减肥
get rid of /reduce weight
You look good now,you don't need to lose weight.
你现在看起来很好，不需要减肥。
I've set myself two goals for next year:to lose weight and pass the driving test.
我为我明年确定了两个目标：减肥和通过驾驶测试。

A:Julia,look at me!I'm gaining weight.How could I lose weight?Do you have any good ideas?
茱莉娅，你看，我长胖了。我怎么样才能减肥呢？对此你有什么建议吗？
B:Since summer is coming.I think swimming is a good way for you.
夏天就要来了，我认为游泳对减肥有益。
A:Are you sure?
真的吗？
B:Of course!Swimming can help you stay in shape by targeting all parts of your body.
那当然。游泳能让身体所以部位都活动。让你保持匀称的身材。
A:Really?Does swimming have other advantages?
是吗？游泳还有其他好处吗？
B:It could also help you increase vital capacity.
它还可以帮你增加肺活量。
A:That's great.Okay,from now on I would swim three times a week.I hope I can get rid of the weight
太好了，从今天开始我每周要游泳三次。希望可以把体重减下去。
B:You will make it if you persist.
如果你坚持一定会减下去的。