如题所述
主句的时态一般应该是过去时态：
He was doing his homework when his dad came in.
He had finished his homework when his dad came back.
He would do his homework when his dad came bach the next day.
第三个句子的是啥啊，感觉没见过
追答第二天他爸爸回来的时候，他会做作业。（过去将来时态）
温馨提示：答案为网友推荐，仅供参考
