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1、数词一、分数表示法：基数词是分子；序数词是分母。除了分子是“1”，其他情况序数词都要用复数。3/4 three fourths three quarters1/2 a half1/3 one third one quarter a quarter百分数表达法：基数词+percent50%fifty percent3%three percent0.12%zero point one two percentpercent：per 每一 cent“百”不用复数由数词构成的合成形容词：作定语时：名词用单数形式，名词性短语各部分间用连字符“-”a sixteen-year-old girlA five-
2、year planA fifty-meter-long bridgehundred,thousand,million的用法A hundred peopleTwo hundred peopleHundreds of people主谓一致1.就近一致：1）当主语由eitheror;neithernor;not onlybut also连接时，谓语动词与邻近的一致Either the teacher or the students are our friends.Here is a pencil-box and two exercise books.2）many a“许多”，但后面跟单数名词，谓语动
3、词用单数Many a person has had that kind of experience.3）more than one+单数名词，做主语时，谓语动词用单数More than one student was not able to pass the exam意义一致意义一致1）what，who，which，any，more，all作主语时，谓语动词的数主要靠意思来决定。2）表示时间、重量、数目、价格、长度、数学运算的词或词组做主语时，如果把这些复数形式的词或词组看做一个整体，谓语动词用单数形式。3）有些书名、具名、国名等虽以复数形式出现，其谓语动词通常用单数形式。4）trousers
4、,glasses,clothes,shoes等词作主语时，谓语动词用复数，但是这些名词前有a(the)pair/kind/sort/type of 等量词修饰时，谓语动词用单数。5）定冠词+形容词或分词，表示某一类人时，动词用复复数。数。三、语法一致三、语法一致1）以单数名词或代词、动词不定式短语、动名词或从句做主语主语时，谓语动词一般用单数形式；主语为复数，或由and/bothand连接的合成主语时，谓语动词用复数形式。2）主语为复数名词或代词，尽管后面跟有with,togetherwith,except,but,like,as well as,rather than,more,no les
5、s than,besides,including等引起的短语，谓语动词仍用单数。Mr Green,together with his wife and children,has come to China.3)either,neither,each,every或no+单数名词和由some,any,no,every构成的复合不定式，都做单数看待。Each of us has a new book.Everything is okay.4)”the rest of以及几分之几或百分之几”后加名词做主语时，其谓语动词的数要根据短语中后面名词的数而定。The rest of the lecture i
6、s wonderful.The rest of the students are to remain here.5)quantities of 以及amounts of 后面跟不可数名词时，谓语动词需用复数形式。提示：1）若and所连接的两个词是指同一人或物，或一个整体的概念，后面的谓语动词应用单数。The writer and artist has come。A knife and fork is lying on the table。2）由and连接的并列单数主语前如果分别有no,every,more than a(an),many a(an)修饰时，其谓语动词用单数形式。Every student and every teacher in the room.No boy and no girl is interested in such a game.