one and a half bananas后接单还是复数

one and a half bananas后接单还是复数 one and a half 后面加名词单数还是复数? one apple and a half是复数还是单数? one cake and a half 谓语是单数还是复数 急One and a half bananas has rotted away.为何banana 用复数,而后面用has One and a half bananas has rotted away. "one and a half bananas"谓语为什么用单数? one and a half years 谓语动词用单数还是复数?one year and a one and a half hour看做单数还是复数?half an hour one and a half apples&one apple and a half的谓语动词应该是复数还是单数? one hour and a half作主语谓语是单数还是复数?one and a half hours呢? one and half还是one and a half