having done的用法having been done 及being done的区别 作主和状语的区别

Question

如题所述

Answer 1

这是非谓语动词的用法
having
done，having
been
done
是分词的完成式，前面是主动态，后者是被动态！而这两个是做状语的
being
done
是分词的进行加被动，这是做主语的！
例句：Being
exposed
to
nuclear
radiation,
even
for
a
short
time,
may
produce
changes
of
genes
in
human
bodies.
区别：
1.being
done：被动语态,意思是：正在被做（被完成）
2.done:是过去分词,表示“完成＋被动”
3.being
done：表示与所修饰名词或主语为被动关系,而且动作真在进行,在句中可以作定语和状语.如：The
building
being
built
will
be
our
classroom.
4.having
been
done：现在完成时,意思是：已经被完成.只能在句中作状语,表示动作发生在谓语动词动作之前,而且与主语为被动关系.