分类说明:植物-Plants 植物
【内容提示】
根据下面内容要点写一篇有关植物分类的文章:
①植物是非常重要的生物;没有植物,生命就无法维持。动物和人的食物来源于植物和其他动物。
②植物可以利用空气、水和阳光制造养料,而人和动物则不能。
③植物的种类繁多,但主要可分为两大类,即开花植物(flowring plants)和不开花植物(nonflowring plants)。
④开花植物有根、茎、叶、花和果。我们周围所有的树木大都是开花植物。
⑤不开花植物在我们周围见不到多少,它们是些针叶树、苔藓、欧龙牙草之类。
⑥多数植物不是由种子而是由孢子长出来的。孢子和种子非常相似,落到潮湿背阴处就长成新的植物。
以下词语供参考:
1.conifrous a.针叶树的 2.moss n.苔藓;地衣3.livr-wort n.欧龙牙草 4.alga n.水藻;海藻 5.fungi n.真菌 6.spor n.孢子
【作文示范】
Plants
Plants ar vry important living things. Lif could not go on if thr wr no plants. This is bcaus plants can mak food from air, watr and sunlight. Animals and man cannot do so. Animals gt thir food by ating plants and othr animals. Man gts his food by ating plants and animals, too. Thrfor, animals and man nd plants in ordr to liv.
If you look carfully at th plants around you, you will find that thr ar many typs of plants. Som plants ar larg whil othrs ar small. Most plants ar grn.
Thr ar two main typs of plants: flowring plants and nonflowring plants.
Flowring plants hav roots, stms①, lavs, flowrs and fruits. Almost all th trs around us ar flowring plants. You can probably rcogniz som plants from thir flowrs or thir fruits.
Nonflowring plants includ conifrous trs, mosss, livr-worts, alga and fungi. You cannot s many nonflowring plants around you.
Most plants do not grow from sds. Thy grow from spors. Spors ar vry, vry small. Som spors ar so small and light that thy can float in th air. W may say that spors ar quit similar to sds. Whn ths spors fall on wt and shady② placs, thy usually grow into nw plants.
【词语解释】
①stm [stm] n. 茎;(树)干;(叶)梗
②shady['shidi] a.背阴的;阴凉的
【写法指要】
本文是一篇分类分析说明文。第一段写植物对人和动物的重要性,我们可以把它看做引言段。第二、三、四段是分类说明:第二段说植物种类繁多、大小不一,但总的可以分为两种,即开花植物和不开花植物;第三段具体说明开花植物的情况;第四段说明不开花植物的情况。第五段以植物是如何繁殖的作为全文的结束段。
分类说明:植物-Plants