谓语用单数的情况

谓语需用单数的部分情况：

1) 代词each和由every, some, no, any等构成的复合代词作主语,或主语中含有each, every, 谓语需用单数.例如：

Each of us has a tape-recorder. There is something wrong with my watch.

2) 当主语 是一本书或一条格言时,谓语动词常用 单数.例如：

The Arabian Night is a book known to lovers of English.

< The Arabian Night >是英语爱好者熟悉的一本好书.

3) 表示金钱,时间.距离.价格或度量衡的复合名词作主语时,通常把这些名词看作一个整体,谓语一般用单数.(用复数也可,意思不变.) 例如：

Three weeks was allowed for making the necessary preparations. Ten yuan is enough.