1 . What is the function of the -ing form in each of the following sentence?
1. As you can imagine, getting burnt can lead to very serious injuries.
2. The first and most important step in the treatment of burns is giving first aid.
3. It is best to place burns under cool running water, especially within the first ten minutes.
4. Remove any clothes using scissors if necessary, unless you see the fabric sticking to the burnt skin.
5. You can protect the burnt area by covering it with a loose clean cloth.

2 . 越来越多的外国人对汉语感兴趣，根据下列图片和你的朋友一起讨论外国人学习汉语的方式。

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3 . 写出画线部分在句中所作的成分。
1. The crucial thing is using body language in a way that is appropriate to the culture you are in.
2. However,   you should avoid making this gesture.
3. A good way of saying “I am full” is moving your hand in circles over your stomach after a meal.
4. Perhaps the best example is smiling.
5. Experts suggested smiling to yourself in the mirror to make yourself feel happier and stronger.