改错:1 he is able to ride a bike when h

问题描述:

改错:1 he is able to ride a bike when h
改错:1 he is able to ride a bike when he was five 2 l have no interest in play the piano 3 Usually,the old is weak and slow求答案!

1 he 【was】able to ride a bike when he was five
2 l have no interest in 【playing】 the piano
3 Usually,the old 【are】 weak and slow为啥子要这样改第一句, 不这样改的话, 时态不一致
第二句in 是介词, 要接v-ing 作宾语
第三句 the old 指所有的老年人, 是个复数概念, 所以谓语用复数 are