一、主谓一致三原则:主谓一致是指谓语动词与主语在人称和数量上保持一致,主谓一致必须遵循三原则:语法一致原则,意义一致原则,就近一致原则。1. 语法一致原则:指主语是单数形式,谓语动词用单数形式;主语是复数形式,谓语也用复数形式。Tom is a good student.汤姆是个好学生。They often play football on the playground.他们经常在操场上踢足球。2. 意义一致:指主语形式上为单数,但意义为复数,因此谓语动词用复数形式;或主语形式上为复数,但表示单数意义,这是谓语动词用单数形式。My family are having lunch now.我们一家人现在正吃午饭。Twenty dollars is too expensive for the book.这本书 20 美元太贵了。3. 就近一致:指谓语动词用单数形式还是用复数形式,取决于最靠近他的主语。例如:Not only the teacher but also his students like playing football.不仅老师喜欢踢足球,而且他的学生也喜欢踢足球。There is a pen and some books on the desk.课桌上有一支钢笔和一些书。二、 主谓一致常考题型1. 单数名词(代词),不可数名词作主语时,谓语用单数形式,复数名词 (代词)作主语,谓语用复数形式。The desk is Tom’s.这张桌子是汤姆的。Some water is in the bottle.一些水在瓶子里。The students are playing football on the playground. 学生正在操场上踢足球.2. many a+单数名词作主语,意义虽为“许多”,但谓语要用单数形式。Many a student has been to Shanghai. 许多学生到过上海。3. more than one+单数名词作主语,谓语用单数。More than one student has ever been to Beijing. 不止一个学生曾经去过北京。4. 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。例如:Two months is a long holiday.两个月是一个长假。Twenty pounds isn’t so heavy.2 0 磅并不太重。Ten miles isn’t a long distance.1 0 英里并不是一段很长的距离。Five minus four is one. 5 减 4 等于 1。5. 主语是 each/every+单数名词+and(each/every)+单数名词时,谓语动词用单数。Each boy and each girl has got a seat.每个男孩和女孩都有一个座位。Every man and every woman is at work.每个男人和女人都在工作。6. one a...