及物动词
1. What do you lack ?
你要买点什么?
2. He lacks courage.
他缺乏勇气。
3. A coward lacks courage.
怯懦者缺乏勇气。
不及物动词
1. They lacked for nothing.
他们什么都不缺少。
名词
1. lack
1. He can not buy it because of his lack of money.
他因缺钱买不起这个。
2. Water is a lack of this region.
这个地区缺水。