lack 和lack of 有什么区别？？

都可以当缺少 缺乏讲；只是前者是动词 后者是名词

he lacks money. he has a lack of money.
lack作动词还可以用be lacking in句型

lack+of＋名词： The plants died for lack of water.
Lack+名词： We lack the strength to walk any further.