连字符前是否一定要加冠词?athree-dayvacation/holiday经常看到这个连字符表达的词组,前面有冠词,请问如果,前面不写冠词a是否也是正确的呢?比如Iwillhavethree-dayvacation这么说没加冠词

Question

连字符前 是否一定要加冠词?
a three-day vacation / holiday
经常看到这个连字符 表达的词组,前面有冠词 ,请问如果,前面不写 冠词 a
是否也是正确的呢?比如 I will have three-day vacation 这么说 没加冠词,可以么?
my three-day vacation 这个情况就不用加冠词吧.
I will have three-day vacation
这个情况加不加冠词啊？have (a) three-day vacation
2 How long has the plane been put off?
这个时间提问不需要加介词，
如果问具体的几个小时
How many hours has the plane been put off
how many hours 做主语，要不要加个介词 什么的
how many years 记得是名词短语
【For 】how many hours has the plane been put off
不过实际中，见到好多也是不加的。呵呵。

Answer 1

至于i have ...这个要不要加,是要加的,前面有代词修饰,如my 的这种,就不用冠词,没有就需要加,应该是,i have a three-day holiday .我有3天的假期.