1.I had to finish my homework before I went to bed.2.My father got home very late last night.1.第一句不是有had和went两个过去时单词吗,为什么要用to finish不用to finished?2.第2句句尾有last night,got home为什么不用went home?

问题描述:

1.I had to finish my homework before I went to bed.2.My father got home very late last night.
1.第一句不是有had和went两个过去时单词吗,为什么要用to finish不用to finished?2.第2句句尾有last night,got home为什么不用went home?