名词形式 ：laugher
例句
8·The men who were waiting for me at the railroad station roared with laugher when they saw Walter and me in overcoats.
当那些在火车站接我的人们看到我和沃尔特穿着大衣时，都开怀大笑起来。
1. laugh: 本身就是一个可数名词，当“笑”讲。
Tom gave a deep rumbling laugh at his own joke. Tom对自己讲的笑话报以朗声大笑。
2. laughing: [ˈlɑːfɪŋ] n. 笑；笑声
I couldn't speak for laughing. 我笑得说不出话来。
3. laughter:[ˈlæftər] n. 笑，笑声
Their laughter filled the corridor. 他们的笑声充满了走廊。
laugh动词，笑，大笑。名词是laughter，笑声。
