我有三个句子不懂,请判断句中名词的数的用对还是错. 1.I have seven-day holiday.( ) 2.I have a seven days'holiday.( ) i.I have seven days holiday.( ) 若我把2句改为I have seven days'holiday,那么2句中的seven days'holiday岂不是和3句I have seven days holiday中的seven days holiday一样了吗?
1.I have seven-day holiday.(错) 2.I have a seven days'holiday.(错) i.I have seven days holiday.(对) 有连字符-时,看作一个单数,前面要加冠词I have a seven-day holiday. 没有连字符时,超过一天就要用复数形式I have seven days holiday