1. 看似复数却表单数概念 ①Maths are my favourite subject. (×) ②Maths is my favourite subject. (√) [解析] maths本身是一个以“s”结尾的单词,而不是一个复数名词,表示单数概念“数学”这一学科,因此第②句正确。 类似的有:physics,news,politics...