98世界杯官方纪录片:one and a half years (have/has) passed since we last meet

one and a half years (have/has) passed since we last meet one-and-a-half 是什么意思？请进 “两年半”译为“two and half years”与“two and a half years”是否都是正确的？ 改错 He stayed here one and a half day One and a half apples_____ left on the table. (A.is B. are) "six of one and half a dozen of the other "什么意思？ 半斤八两be six of one and half a dozen of the other dozen one and a half + 名词复数 后面的谓语用单数还是复数？ "one and a half bananas"谓语为什么用单数？ 请问one and a half作主语,谓语动词应该用单数还是复数?