laugh(ter)
1.laugh通常用作类名词。例如：He gave a loud laugh. 和He gave three loud laughs. laughter在现代英语里几乎只用作抽象名词，前面不用a，也没有复数形式。可以说Listening to my story，he gave a laugh from time to time, I don't know how my story caused so much laughter。He broke into a low clear laughter里用a，比较少见。a ...laughter是“一阵…的笑声”，比a ...laugh长些。
2.The laugh was against him是英国用法，The laugh was on him是美国用法。
