yan830522
幼苗
共回答了18个问题采纳率:77.8% 举报
这由原句的时态决定.如:I spend two hours getting to school.对two hours划线提问--How long do you spend getting to school?
比较:He spent one hour finishing his homework.对one hour 划线提问--How long did he spend finishing his homework?
1年前
11