i don't know when_____famous A.does he become B.he becomes C.did _英语解答

i don't know when_____famous A.does he become B.he becomes C.did he become D.he become
答案是B还是D呢,太纠结,顺便问一下C中助动词为什么不能加,陈述语序不能加助动词吗?

人气：153 ℃　时间：2020-01-29 22:29:12

解答

B 根据选项的这种形式只能是he becomes或者he becameC中助动词为什么不能加，陈述语序不能加助动词吗？要表达过去做过，直接用he became，不要在前面加did，否则就不是陈述语序了。陈述语序要加did的情况只有否定的时候。比如：I want to know why he didn't come.