attach的名词形式是什么

　　例句：

　　We attach labels to things before we file them away.

　　存档前，我们先贴上标签。

　　They attach great importance to the project.

　　他们高度重视这个项目。

　　I attach a copy of my notes for your information.

　　我附上笔记一份供你参考。

　　Attach this rope to the front of the car.

　　把这绳子系在小轿车的前面。