be did是什么时态

　　That joke's been done to death.

　　这个笑话都听腻了。

　　This isn't a genuine antique ─ you've been done.

　　这不是真正的古董——你上当了。

　　Just because something has always been done a certain way does notmake it right.

　　仅仅因为老是以某种方式做事并不意味着这么做就是对的。

　　It was hard to visualize how it could have been done.

　　很难想象这是如何办到的。

　　What should be done in the next stage is hotly disputed.

　　下阶段该做什么，争论很激烈。

　　It should be done this way, shouldn't it?

　　这样做应当不应当？

　　It should be done this way.

　　应当这么做。

　　Petty-bourgeois sentiment should be done away with.

　　要抛弃小资产阶级的伤感情调。