Mary says that the shoes I bought yesterday______ easily .A are worn outB is worn out C wear outD wears out 答案选c为什么不选a用被动呢

Mary says that the shoes I bought yesterday______ easily .A are worn outB is worn out C wear outD wears out 答案选c为什么不选a用被动呢
Mary says that the shoes I bought yesterday______ easily .
A are worn out
B is worn out
C wear out
D wears out
答案选c为什么不选a用被动呢

Mary says that the shoes I bought yesterday______ easily .A are worn outB is worn out C wear outD wears out 答案选c为什么不选a用被动呢
wear out 此处是说明名词的性质,所以不用被动
例如：The cups wash easily.这杯子好洗.
The horse rides well.这马好骑.

当然选C，wear out 穿破，磨损，用坏；
指状态，不用被动

这里说的是鞋子很容易就烂了，不用被动；如果说的是鞋子被人穿烂了，就要用被动了。这个句子里没这个意思，所以不用被动

选C
这里主动表达被动语义，这是这类词语的固定用法，比如wash,smell,feel等，一般是一类表达身体触觉的动词，叫做感官动词