改错 He could be able to skate when he was seven years old
问题描述:
改错 He could be able to skate when he was seven years old
答
应该改为如下正确形式:
He was able to skate when he was seven years old
be able to do 能够做某事。。。
答
He was able to skate when he was seven years old
could be able to 意义重复