写作思路及要点：围绕老虎的习性展开详细描写，接着表达自己的想法以及观点。
正文：
A tiger is a kind of catamount animal.It looks like a catbut much bigger than a cat.A tiger is very ferocious and it eats mainly meat.It has yellow and black streaks all over its body and it looks very beautiful.Its tail is long and strong and it can hit its quarry dying.
老虎是猫科动物的一种，它看起来像一只猫，但比猫大很多。老虎非常凶猛，是肉食性动物。它黄色和黑色条纹的所有机构，看起来非常漂亮。它的尾巴又长又有力，它可以击中它的猎物。
Tigers live in the thick forests and small animals in the forests are tigers' food.
老虎生活在茂密的森林里，森林里的'小动物是老虎的食物。
During the past yearsmany forests have been cut down and the living conditions of the tigers are becoming worse and worse.
在过去的几年中，许多森林被砍伐，老虎的生存环境越来越糟。
There are fewer tigers left in the world now.Tigers are the animals of the worldand they should have their own living spaces.We must do our best to protect the tigers and their living environment.
有少数虎留在现在的世界。老虎是世界性妁动物，它们应该有自己的生存空间。我们必须尽我们所能来保护老虎和他们的居住环境。