——shirtarebothondesk.A.Tom'sandJohn's;MaryandJane'sB.TomandJohn's;Mary'sandJane'sC.Tom'sandJohn's;Mary'sandJane'sD.TomandJohn's;MaryandJane's最好给我讲讲为什么,

Question

——shirt are both on __desk.
A.Tom's and John's;Mary and Jane's
B.Tom and John's;Mary's and Jane's
C.Tom's and John's;Mary's and Jane's
D.Tom and John's;Mary and Jane's
最好给我讲讲为什么,

Answer 1

选A
are 说明是两人各有衣服,desk用单数说明两人共用一张桌子
若一样东西为两人共有,则后一个人名用所有格；
如果不是两人共有,而是各有各的,则两个名词都用所有格,且其后名词应为复数.例如：
The woman dressed in blue is Mary and Alice’s mother．
那个穿蓝衣服的妇女是玛丽和爱丽丝的母亲.
You should find what the difference between Mr． Smith’s and Mr．Black’s cars is．
你应当发现史密斯先生与布莱克先生的汽车的不同之处.