作业帮when cooking supper 是什么时态啊?
来源：学生作业帮 编辑：作业帮 分类：英语作业 时间：2024/05/22 03:33:40
when cooking supper 是什么时态啊?
when cooking supper ,we heard someone is knocking at the door
上面是错的啊，we heard a knock on the door 我想知道为什么不用knocking 有没人知道？
when cooking supper ,we heard someone is knocking at the door
上面是错的啊，we heard a knock on the door 我想知道为什么不用knocking 有没人知道？
可以用KNOCKING,但是要去掉IS
hear sb do/doing sth
hear a knock也是对的,只是knock在这里是名词,上面是动词,词性变了,都是对的
这题是过去式,由谓语动词的HEARD 可以看出
前面是个时间状语从句,原句是when we were cooking supper.
当从句的主语和主句的主语相同时,可以省去从句中的主语和谓语动词.所以不要WE WERE.
hear sb do/doing sth
hear a knock也是对的,只是knock在这里是名词,上面是动词,词性变了,都是对的
这题是过去式,由谓语动词的HEARD 可以看出
前面是个时间状语从句,原句是when we were cooking supper.
当从句的主语和主句的主语相同时,可以省去从句中的主语和谓语动词.所以不要WE WERE.
when cooking supper 是什么时态啊?
( )my father was cooking supper when I _.
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