就象一个母亲忍不住要记载孩子成长道路上的趣事,今晚作文课也有这么一个可爱的男生,连我这么严肃的人都被逗的受不了了,记载下来吧.

在探讨的是,野生动物的重要性这个话题, 互动环节一个男生有话要说,观点还真不错,"生态平衡",表扬! 接着再引导,生态平衡的英文怎么说,他张了张嘴,还不太能出口,我知道他想说的是 Ecosystem.(其实很多的啊,natural balance, the balance of the nature, biological life cycle......)于是问他,是不是平时学英语很少出声,他点头.当场给出诊断,要快速纠正! 接着启发,有什么例子证明野生动物对生态平衡很重要? 他答:狼. 我看他毫不犹豫更加充满希望地启发:狼被过度捕杀会导致哪个物种繁殖过度,答曰,羊.我楞了楞,好新鲜的例子.很好,羊多了有什么危害?草就被吃光了,那又有什么危害?羊就死亡了......

全班一片笑声,没有扣回到主题句上,但该同学的思路还算是很快的!忍俊不禁的同时,我也深深感觉,不少同学的作文之所以难拿理想分数,除英语水平本身,还有两个常见弱点:1)缺乏恰当的论据,和2)语言概括能力.这就是为什么课堂上要教大家出观点,准备论据,以及行文的简洁概括.英文当中口语和书面语差别更明显,更何况大作文是议论文!不要让你的作文带上太多的口语化的痕迹哦.另外,也要争取用不超过3句话的概括性语言,快速扣题(就是要点出任一物种被过度捕杀后的对人类或大自然的不良后果,才会充分体现物种在生态平衡中的重要性)

下面给大家一个自然段供参考:

As the pace of civilization accelerates, more people, taking more space, needing to use more natural resources, engaging in ever-growing consumption, impose severe deterioration on the habitat of animal. An increasing number of people come to realize that the disappearance of animals will result in serious threat to the equilibrium of ecosystem. Simply put, the extinction of hawks, a rat-eating bird seen in many regions, will result in the rapid propagation of rats. And rats, further, will destroy the prairies and threaten the other animals like gazelles, zebras and others, who live on grass and green lands. The coexistence of animals and human beings creates perfect harmony and brings about the vividness to our planet.

这只是很多写法的一种.另外还可用蛇和鼠类的例子,谈到蛇的被过度捕杀,引发鼠类猖獗和卫生环境破坏,sanitary surrounding,  inadequate harvest,disaster to the whole ecosystem.......