reduce by 和reduce on的区别
问题描述：
reduce by 和reduce on的区别
the price of that type of colour tv has been reduced_____
A)by 18 percent
B)on 18 percent
为什么不能选B
2)Janet cannot drive yet,but she wants______
A)her own car
B)the car of her own
C)a her own car
D)a car of her own
为什么不能选B
答
1) 习惯用法.就像为什么要用at night,不是in night
2) 可以是 a car of her own.她没要某辆特定的车,所以不用the