由句连篇——背佳句、学衔接,让作文流畅起来 一、话题写作佳句必背1.We have been cutting down too many trees, which causes birds and animals to lose their natural habitats. 我们一直在砍伐过多的树木,这使鸟类和动物失去了它们自然的栖息地。2.Water sources have become so badly polluted that some of the water is unfit to drink or to use. 水资源已经被污染得如此严重,以至于一些水已经不适合饮用或使用。3.It's high time that we paid much attention to protecting our environment. 到..