the contry,covered with cherry tree flowers,looks as though it is covered with pink snow

题目

the contry,covered with cherry tree flowers,looks as though it is covered with pink snow
本剧中COVERED WITH 出现两次,为什莫第一次出现前没有BE动词,第二次却有?

答案

本句中的句子成分的主语是“the contry”,谓语是“looks”,而第一个,covered with 是非谓语,它与本句的主语是被动关系,所以用covered with （非谓语的形式就是 动词后加ING ,动词后加ED,也就是过去分词.前面不可能有be出现,这是不符合固定搭配的.）
而第2个是though引导的从句,covered with 是从句的谓语.由于是被动关系,所以用is covered with pink snow