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 |
a tree has three main parts, the roots, the branches and the leaves. under the ground, the roots spread out so that the tree can stand firm. above the ground, the roots form the trunk, and the trunk supports the branches.
near the top of the tree, the trunk divides into branches. at the top of the tree, the leaves grow out of the branches. the leaves receive sunlight to help the whole tree grow.