نقول
a ten-pound note
two 14-year-old girls
a four -week English course
a six -hour journey
a three-week holiday
هنا pound,year,week, hour صفات لذا لا تجمع
لكن نقول
I've got a week's holiday.
I've got three weeks'holiday.
I need eight hours'sleep a night.
My house is very near here-only about five minutes'walk.