1、常见用法有：He lacks confidence.(他缺乏自信)The company is lacking in resources.(公司资源缺乏)The essay lacks coherence.(这篇文章缺乏连贯性)
2、另外， "lack" 还可以用作名词，意思是 "缺乏" 或 "不足"。如The lack of funding has been a major obstacle for the project.(资金短缺是这个项目的一个主要障碍)She was aware of the lack of progress in her work.(她知道自己工作中的进展不足)
