作业帮帮忙看一下下列几个句子是什么时态!
来源：学生作业帮 编辑：作业帮 分类：英语作业 时间：2024/10/04 14:51:58
帮忙看一下下列几个句子是什么时态!
1.I had been at the bus stop for half an hour when a bus finally came.
2.John Baird went off into the room where the picture would be shown.
3.This piece of good news greatly surprised all of my classmates.
4.I've been to Americe many times.
1.I had been at the bus stop for half an hour when a bus finally came.
2.John Baird went off into the room where the picture would be shown.
3.This piece of good news greatly surprised all of my classmates.
4.I've been to Americe many times.
1.过去完成时+一般过去
2.一般过去+过去将来
3.一般过去
4.现在完成
2.一般过去+过去将来
3.一般过去
4.现在完成