weak的名词形式可数吗
weak的名词形式weakness是可数名词。
weakness
n.软弱;虚弱;疲软;衰弱;懦弱;(系统、性格等的)弱点，缺点，不足;(对人或事物的)迷恋，无法抗拒
复数 weaknesses
Tom succeeded in his efforts to overcome his fatal weakness.
汤姆努力克服了自己致命的.弱点。
He thought that crying was a sign of weakness.
他认为哭是懦弱的表现。
The article predicates that the market collapse was caused by weakness of the dollar.
这篇文章声言，市场的崩溃是美元疲软造成的。