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Fire can help people in many ways, but it can also be dangerous (危险P. Fire can keep you warm, give light and cook food. However, big fire can also burn (燃烧) your house and hurt you. Nobody knows how ancient (古代的) people started using fire. Today, people can make fire very easily. They use matches (火柴) and lighters (打火机). Sometimes children like to play with them, but it can be very dangerous. One match can burn a piece of paper, and a small fire can start a big fire to burn everything. So you must be careful with matches. If you use the fire in the right way, it can help you, but if you use it in the wrong way, it may hurt you.