half an hour中的half词性为什么是名词?
half an hour中的half词性为什么是名词?
half an hour 中的 half 是什么词性,half没有形容词性
是half hour还是half an hour?
半小时用英语讲为什么是half an hour而不是a half hour
half an hour or a half hour?
a half hour还是half an hour?
half hour =half an hour
half an hour later
half an hour?
There's still half an hour left. 中的left是什么意思,是什么词性?
half an hour 是单数还是复数
half an hour later she woke up.还有这half an hour为什么等于thirty mi