eight and a half能表示八点半吗

eight and a half能表示八点半吗 half an hour?half an hour、an hour and a half 、 one and a half hours和one half hour都能表示一个半小时吗? Peter was eight and a half (1)old. decade and a half到底表示多少年? I have been a student_____ (near ) eight and a half years.答案应该是什么呢? 完形填空Peter was eight and a half (1)old. My mother and a half-brother and two half- sisters 谁能翻译下意思 half past one可以表示时间1:30吗,还是one hour and a half one and a half half past eight 翻译 six and a half million为什么是650万 关键是a half 在表示数量时怎么用 初中一年级英语一般现在时语法题A teenager________[sleep} for eight and a half hours and an adult for seven or eight hours.Old people____[require] only five or six hours. a quarter to eight half past six a quartera quarter to eight half past six a quarter past seven a quarter to five eight o,clock是几点 a quarter and a half a billion and a half I go to school at half past seven and ______ there befor eight o'clock,and ______ start at eight. Last Sunday Alice did some cleaning for ____.A.two and a half hours B.two and half hour C.two and half hours D.two hour and a half望好心人能顺便说明解题原因, It will take____ time to finish the course.A one and a half years' B.a year and a halfC.one and a half year's D.a year and a half's选哪个?要表示……的时间,就可以排除B,但是one and a half years=a year and a half,我怎么觉得A和D