新概念第4册视频讲解

新概念英语第四册知识点总结：Spare that spider

2-1. Why, you may wonder, should spiders be our friends?

【译文】你可能会奇怪，蜘蛛怎是吾友?

【讲解】you may wonder为插入语。

2-2. Because they destroy so many insects, and insects include some of the greatest enemies of the human race.

【译文】因为它们消灭了那么多昆虫，包括一些属于人类最大敌人的昆虫。

2-3. Insects would make it impossible for us to live in the world; they would devour all our crops and kill our flocks and herds, if it were not for the protection we get from insect-eating animals.

【译文】昆虫可以使我们无法在地球上生存。如果不是食虫动物的保护，则这些昆虫会吞噬我们所有的庄稼，杀死我们成群的牛羊。

【讲解】make it impossible for us to live in the world中it是形式宾语，真正的宾语是for us to live in the world。insects would和they would中的would均表示与事实不符的虚拟结构。

if it were not for the protection…作前面两个分句的非真实条件状语从句，意即“要不是我们从食虫那里得到保护的话……”。这里的were是虚拟语气结构。we get…animals作protection的定语。

2-4. We owe a lot to the birds and beasts who eat insects but all of them put together kill only a fraction of the number destroyed by spiders.

【译文】我们受惠于食虫的飞禽鸟兽，但把它们都算在一起，也只是捕杀了蜘蛛消灭的昆虫数的一个零头。

【讲解】all of them指birds and beasts，put together kill相当于…them who are put together kill。意即“它们全加在一起消灭……”。the number指“被消灭的昆虫数”。

【单词和短语】

owe:应感激(to know that someone’s help has been important to you in achieving something)，例如：

We owe our parents a lot. 我们得大大感激我们的父母。

2-5. Moreover, unlike some of the other insect eaters, spiders never do the least harm to us or our belongings.

【译文】此外，不同于其他一些食虫动物，蜘蛛对人类及其财物丝毫无损。

【单词和短语】

belongings：所有物，财物，动产;行李，例如：

He left all his belongings to his brother.

他把他的全部财物留给了他兄弟。

It didn’t take me long to arrange my belongings;for I had brought little.

因为行装带得不多，我没花多少时间就把东西整理好了。