insect前面加a嗎

前面不加a，例如：

1、The insect's wings are almost transparent.這昆蟲的翅膀幾乎是透明的。

2、Honeybees use one of the most sophisticated communication systems of any insect.蜜蜂之間所用的交流方式是昆蟲中最爲複雜的方式之一。

3、The roof timbers were affected by rot and insect attack.屋頂的木料已經腐朽並遭蟲害。