Question

where is your brother

where is your brother
At______
A.Mr Green's
B.the Smith's
C.doctor's
D.house of Mr John
为什么选A

Answer 1

A的意思是：在格林先生家,Mr Green‘s相当于：Mr Green's home
B the Smith,一般是指Smith一家,所以要用复数形式：the Smiths'
C 和D中的doctor和house都是特指,所以要加定冠词the：the doctor's 和 the house of Mr John