最新北师大2017考博英语 2017考博英语语法基础讲解：语法一致原则.doc

最新北师大2017考博英语 2017考博英语语法基础讲解：语法一致原则考博网权威发布2017考博英语语法基础讲解：语法一致原则，更多2017考博英语语法基础讲解相关信息请访问博士入学考试网。>>>全国各省各高校2017年考博报名时间及入口汇总 >>>全国各省各高校2017年考博考试时间汇总 >>>全国各省各高校2017年考博考试科目汇总 【新东方网络课程】2017医学考博英语统考全程班！点击免费试听<<<语法一致原则是指句子的主语和谓语在语法形式上一致，即通常情况下，谓语动词的单复数形式依主语的单复数形式而定， 主语为单数形式时谓语动词用单数形式， 主语为复数形式时谓语动词也用复数形式。具体内容请看下文。1. 以单数名词或代词、动词不定式短语、动名词短语或从句作主语时，谓语动词一般用单数形式;主语为复数时，谓语动词用复数形式。如：His father is working on the farm. / To study English well is not easy. / What he said is very important for us all. / The children were in the classroom two hours ago. / Reading in the sun is bad for your eyes.注意：由what引导的主语从句，后面的谓语动词多数情况用单数形式，但若表语是复数或what从句是一个带有复数意义的并列结构时，主句的谓语动词用复数形式。如：What I bought were three English books. / What I say and do is (are) helpful to you.2. 由连接词and或both and连接起来的合成主语后面，要用复数形式的谓语动词。如：Lucy and Lily are twins. / She and I are classmates. / The boy and the girl were surprised when they heard the news. / Both she and he are Young Pioneers.注意：(1)若and所连接的两个词是指同一个人或物时，它后面的谓语动词就应用单数形式。如：The writer and artist has come. (2)由and连接的并列单数主语前如果分别有no， each， every more than a (an) ， many a (an)修饰时，其谓语动词要用单数形式。如：Every stude第 2 页 共 2 页