1. How to Lose Weight

思路提示：第一段先综述现象：大家都想保持身材要求减肥。第二段介绍多余的体重在身体中形成的原因。第三段提出相应的减肥方法。在最后一段，提出总结性的看法，指出减肥的要诀就是：减少摄入的卡路里，通过运动增加卡路里的消耗量。

参考范文

How to Lose Weight

A beautiful and healthy figure is everyone’s dream. However, not everyone can easily fulfill this dream. Overweight people often have to find precise ways to lose weight.

For normal healthy people, weight is gained by taking in more calories than the body needs. Therefore, if you want to lose weight, you either have to eat fewer calories or find ways to use up more calories you take in. Dieting is probably the most popular way of losing weight, because when on a diet, you are taking fewer calories.

However, the body needs many elements in order to stay healthy, and “fad” or starvation diets are bad because they are not nutritiously balanced. A better way of dieting is to keep track of everything you eat, either by your own careful choices or by buying, for a week at a time, the packaged meals sold by some diet companies. If you do not normally exercise, you should also begin sensible exercises for your age and lifestyle to help your body use up surplus calories.

In short, a combined effort of reducing the calories you eat and using up more calories than usual through exercises should help you shed off part of your body.