| 作文首页初中作文寒假作文写人作文写景作文英语作文想象作文抒情作文议论文说明文单元作文科幻作文诗歌词赋写作素材 小学作文高中作文暑假作文写事作文写物作文节日作文话题作文描写作文记述文应用文毕业作文散文随笔日记游记写作指导 |
as we all know, trees are very useful. they are of great benefit to man as follows: first, trees provide us with wood and other products; second, their roots can allow the rain to sink in and keep the soil, so they help to prevent droughts and floods. trees can clean air and beautiful life.
unfortunately, nowadays in many parts of the world lots of people fail to realize the importance of trees. they have cut trees down in large numbers without a plan,which makes the soil washed away. they don't know where there no trees, the rain washed away the surface of the soil and this causes floods.
we ought to plant trees each year and carefully look after new trees in order not to make the forest slowly disappear. only' in this way can we make the forest serve man forever.