短语和例子 后缀 构成复数型名词。 1.〔用作单数〕表示“…学”,“…术”: mathematics, physics. +更多解释...2.〔用作复数〕 (a)科学名称加上 “my”, “the”, “such” 等特定的词时: His mathematics are strong. (b) 表示“行为”,“活动”,“体系”,“性质”的名称时: Aerobatics take a lot of learning. 3.有若干可单数复数两用者: Politics is [are] fascinating.