53 either的用法
1 either 用于指两个人或物,表示肯定。用作主语或修饰主语时,谓语动词用单数。either 的反义词是neither。either 的结构:
either +谓语动词
either of+代词宾语
either +of+the+复数名词
“Do you like this book or that one?” “Either is all right.” “你喜欢这本书还是那本书?”“哪一本都行。”(作主语 )
You may come tomorrow or the day after tomorrow. Either day is OK. 你可以明天来或后天来,哪一天都行。
There are trees on either side of the road. 路的两边都有树。(=on both sides of the road )
There are shops on either side of the street. 街道两边都有商店。(=on both sides of the street )
There are villages on either side of the river. 河的两岸都有村庄。(=on both sides of the river )
You may take either of the roads. 这两条路你走哪一条都行。
Your either pens is/ are good. (误) (either前面不可再有别的修饰语 )
Either pen of yours is good. (正)你的这两支钢笔都好 。
2 either 用作连词,构成either...or... 结构,连接并列成分,意为“不是……就是……,或者……或者……,要么……要么……”,谓语动词要同or 后的成分保持一致。
Either you or he is right. 不是你对,就是他对。/要么你对,要么他对。(连接主语 )
Do you know either English or French? 你懂英语还是懂法语?(连接宾语 )
You may come either on Sunday or on Friday. 你可以星期天来,或者星期五来。(连接状语 )
You may either take a bus or go there on foot. 你要么乘汽车,要么步行去那里。(连接谓语 )
Either Mr. Zhang or his students are coming. 不是张先生来,就是他的学生们来。
Either his students or Mr. Zhang is coming. 不是他的学生们来,就是张先生来。
提示
①neither表示“两者中没有一个”,谓语动词用单数。
Neither pen is his. 两支钢笔都不是他的。
②both表示“两者都”,谓语动词用复数。
Both of them are blue. 两个都是蓝色的。