填空（ ）we are going to _____holiday.A.a seven- days B.a seven -day C.seven-day
问题描述：
填空（ ）we are going to _____holiday.A.a seven- days B.a seven -day C.seven-day
2.( )The pupils will have a _____holiday.A.three-week B.three-weeks C.third-week
答
1.B
2.A
这两题的回答考点是一样的,都是 【a 数字-日子 holiday】这样的形式
a seven-day holiday 一个七天的假期,这里day不要加复数,用短横线连接之后就只能用单数形式
a three week holiday 一个三周的假期,同理
其他例子：a three-year-old boy 一个三岁男孩,这里year没有+s