我已经请了三周的假期了。I have already asked for a three-weeks holiday.
three weeks' offa thousand words' article a hundred meters' race这个题主要是考察名词复数形式的所有格 所以后面都要加 s'
都不对应该是a three-week holiday或a holiday for three weeks
three–week holiday
a three-week holiday
three weeks' hoildayone thousand words' essay one hundred meters' running 或three-week hoildayone-thousand-word essay one-hundred-meter running
three weeks‘ holiday
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