主谓一致语法2讲,三）意义一致原则 1, 表示时间，价格，重量，数目，长度，数学运算等的词或短语作主语时，这些通常作一个整体概念，谓语用单数形式。 1).Two months is a long holiday. 2).Twenty pounds isnt so heavy,3).Ten miles isnt a long distance . 4).Five minus four is one.,1).Ten thousand dollars _quite a large sum. A.are B. is C. were D. have 2). Two months _quite a long time. Yes, Im afraid that he will miss lots of his lessons. A. is B. are C. was D. were,2. 由and连接的两个单数名词作主语时，一般用复数形式，但and所连接的并列主语是同一个人，同一事物，或同一概念时，谓语动词用单数。 1).The writer and teacher is comi
