There are over two ----trees on the farm .About nine -----them are apple treesA.thousand ,hundred ofB.thousands,hundred C.thousands of ,hundred D.thousand of ,hundredS of为什么
问题描述：
There are over two ----trees on the farm .About nine -----them are apple trees
A.thousand ,hundred ofB.thousands,hundred C.thousands of ,hundred D.thousand of ,hundredS of
为什么
答
A
答
A
two ----trees (200这个数字就是修饰trees的)
nine -----them （900和them很明显不是修饰和被修饰的关系,因此它们之间要加一个介词of）
另外,hundreds of加名词 是 数以百计的意思,是个固定词组,thousands of 同理.它们前面不需要加数词