seen的意思是:vi.看见;明白,vt.看望;会见;观看,n.(美)森(人名)。
see sb. do/doing sth,be seen to do,被看见做了什么事。
seen doing,被看见正在做某事。
例如:They were seen to singing a be song.他们被人看到唱歌了。
seen的三种用法:
与be搭配构成被动语态。
另外跟大多数过去分词一样做后置定语、宾语补足语。
seen的例句:
Down through the years this town has seen many changes.
这些年来这座城市发生了许多变化。
You should have seen her face when she found out!
你真该看看她发现事情真相时脸上的表情!
It's been an age since we've seen them.
我们有很长一段时间没有见到他们了。