a seven-day vacation 或 A seven day holiday a holiday of seven days
a vacation/holiday of 7 days
We have a seven day holiday
因此，"we have a seven-day holiday" 表示我们有一个为期七天的假期。另外，也可以将这个复合形容词改写为所有格形式，即 "seven days' "，表示 "七天的"，因此 "we have a seven days' holiday" 的表达也是正确的。
we have a seven days'vocation.
have a seven-day holiday have a seven day's holiday have a holiday of seven days
另外字头要大写。其次，第二句表达的意思有点模糊，给人的感觉，the holiday是指国庆节，意思感觉是国庆节有7天，实际上你想表达的意思是有7天休息。vacation表示休假，7-day用来做它的定语，同时前面要加a，意思是“一个7天的假期”，for it的it指代National Day。两个句子这样衔接会好点....
be good for sb\ be beneficial to sb\ have good effect on ab 4 有7天的假期 have a 7-day vacation 5 说流利的法语（两种）speak French fluently\ be good at (speaking)French 6 一年到头（两种） all the year round/throughout the whole year 7 以...为自豪（两种）be proud ...
There will/is going to be a seven-day holiday next month. 下个月将有一个七天的假期。一天的假期：a one-day holiday 用复合形容词，中间用连字符 冠词用 a 或 an, 看后面那个单词的音标是否为元音音素开头。注意：是元音音素，而不是元音，你提的one-day holiday，虽然one的首字母是元...
I went to Beijing.On Monday.I taked a plane to Beijing.and On tuesday.I went to beijing hutong .It was interesting. I like it very much . Then next day ,I went to the TIAN'AN MEN SQUARE. It was very big . then I went to many place.I like beijing very much.
