and与主谓一致

and与主谓一致and一词几乎可以用来连接任何语法作用相同的词语，表示一种“追加”的概念。and连接两个单数名词作主语时，通常表示复数意义，其谓语动词要用复数形式。但是，and连接的并列主语及其结构并不总是表示复数意义，其后的谓语动词也并不总是用复数形式。也就是说，这样的并列主语后面有时跟单数的谓语动词。1。 如果and连接的是两个单数可数名词且两个名词前均有冠词，这就意味着是两个不同的人或物，这时谓语动词要用复数形式。例如：Behind the wall stand a house and a garage。在墙的后面有一座房子和一个车库。The director and the secretary were present at the meeting。总监和秘书都出席了这次会议。2。 如果and连接的两个单数可数名词中，前一个有冠词，后一个无冠词，这就意味着是同一个人或物，这时谓语动词要用单数形式。例如：A painter and decorator was painting the walls of the house。一位油漆工兼装璜工正在粉刷房子的墙壁。The editor and publisher of the magazine is friend of my father”s。那家杂志的编辑兼出版商是我父亲的一位朋友。3。 如果and连接的两个名词是不可数名词且前面均无冠词，并且表示一个事物或一个概念，则谓语动词要用单数形式；如果两个名词表示的是两个事物或两个概念，则谓语动词要用复数形式。例如：Courage and resolution are the spirit and soul of virtue。勇气和决心是品德的精神和灵魂。This bread and butter is too big。这块涂了黄油的面包太大了。Trial and error is the source of knowledge。尝试和探索是知识之源。4。 如果and连接的两个名词前面都有each，every，many a，no等限制性词语修饰，谓语动词要用单数形式。如果第二个名词前面的修饰语省略，谓语动词也应为单数形式。例如：Every minute and every second is precious to us。对我们来说，每分每秒都是珍贵的。Many a boy and many a girl has read that novel。许多男孩女孩都读过那部小说。During the Christmas season， every train and airliner was crowded。圣诞节期间，每列火车，每班飞机都载满旅客。5。 a watch and chain， a needle and thread， a knife and fork， a coat and tie， a bow and arrow， a lock and key， the wheel and axle， the hammer and sickle， brandy and water和salt and water等等在句中作主语时，谓语动词均为单数形式。Exercises:1。 Early to bed and early to rise _ a good habit。A。 are B。 is C。 was D。 were2。 A needle and thread _ been found on the floor now。A。 is B。 was C。 has D。 have3。 The water and the food _。A。 was run out B。 were run outC。 was running out D。 are running out4。 A writer and journalist _ there twice。A。 have been B。 has beenC。 has gone D。 have gone5。 Every man and woman _ good reason to be proud of the work done by their parents。A。 has B。 have C。 is having D。 are having6。 Skating and skiing _ very beneficial sports in winter。A。 is B。 are C。 were D。 was7。 War and peace _ a constant theme in history。A。 is B。 are C。 were D。 was8。 All work and no pla