考研英语重在基础，建议广大考生在了解考研英语大纲的前提下，首先积累英语词汇量，并通过做阅读理解、翻译、写作等练习在词义方面加以提升，然后再考虑学习掌握答题技巧。当然，我们知道英语知识的复习是一个长期积累的过程。让我们跟随何凯文老师的每日一句。所谓：不积跬步，无以至千里;不积小流，无以成江海。坚持就是胜利!坚持也是一种信仰!

It(a system of conservation)tends to ignore, and thus eventually to eliminate, many elements in the land community that lack commercial value, but that are essential to its healthy functioning.

主干识别：It tends to ignore, and thus eventually to eliminate, many elements in the land community

其他成分：that lack commercial value, but that are essential to its healthy functioning.修饰many elements 的定语(根据动词lack可以判断出修饰elements ,因为land community 为单数)

翻译点拨：词汇的处理：

代词it 直接翻译不太妥当，指代上文中的a system of conservation保护系统

land community陆地群落

commercial value 商业价值

healthy functioning 健康运行

eliminate去除

成分处理：

主句：

It(a system of conservation)tends to ignore many elements in the land community.

这种保护系统往往忽视陆地群落中的很多物种(elements)

It(a system of conservation)tends to thus eventually eliminate many elements.

这种保护系统往往最终导致它们的灭绝.

并列的两个谓语

定语：

that lack commercial value

that are essential to its healthy functioning

将定语加到其中一个句子的宾语中。

先翻第一句，再翻第二句。

参考译文：这种保护系统往往忽视陆地群落中诸多缺乏商业价值、但对其健康运行至关重要的物种，而最终导致它们的灭绝。