Mrs Green is a doctor of______and her daughter Ann is_____university sthdentA.50 years old;an 18-year-old B.50-year-old;an 18 years old C.50 years old;a 18-years-old D.50-years
问题描述：
Mrs Green is a doctor of______and her daughter Ann is_____university sthdent
A.50 years old;an 18-year-old B.50-year-old;an 18 years old
C.50 years old;a 18-years-old D.50-years
答
A
答
A 区别就是后面的有形容词的作用
答
A
50 years old 形容词表示某一类人
an 18-year-old
1 18 /ei---/元音开头用an
2、18-year-old 相当于一个形容词修饰单位.
答
A
of后表示Mrs Green的一种年龄状态 所以用 50 years old
18-year-old是一个合成词 来修饰student