Sometimes fire is our friend. I can help us in many ways.But sometimes it is our enemy. It can be very harmful.Big fire can burn trees, houses, animals, or people.

　　有时火是我们的朋友，它可以在许多方面帮助我们。可是有些时候它又是我们的敌人，它可能伤害我们。一场大火可能烧掉树木和房屋，动物，甚至烧死人。