one and a half 后加year 还是years

one and a half 后加year 还是years one and a half one and a half 加名词后谓语动词用单数还是负数 one and a half hour 是否要加s one and a half hour 中hour是否加s one hour and a half加’s 还是s’ one and a half 后面加名词单数还是复数? one and a half month用加s吗? One and a half teaspoonfuls.teaspoonful为什么要加S one + 名词 + and a half one kilo and a half one and a half ticket one and half还是one and a half one year and a half 后应该是接单数形式吧?比如one year and a half has passed.不是one and a half years 是one year and a half 一个半小时英文怎么说到底是one and a half hour还是one and a half hours 哪个正确,还是都对?到底要不要加S? one and a half hours 还是hour half的用法是 one and a half years 还是one and a half year?half具体的用法? one month and a half和one and a half month有区别吗?还有one hour and a half和one and half an hour哪个对?