只有特殊
疑问代词what,
which,
who
引导
宾语从句的同时可以做从句的主语。如:
I
don't
know
what
should
be
done.
Can
you
tell
me
which
is
right?
He
told
me
whom
had
come
to
the
office.
这些宾语从句有时可以转换成疑问词+
不定式:
I
don't
know
what
to
be
done.
不过,当疑问代词在宾语从句中作宾语时,都可以转换成"疑问词+不定式“。如:
I
don't
know
whom
I
should
ask.=
I
don't
know
whom
to
ask.
Can
you
tell
me
which
I
should
choose?
=
Can
you
tell
me
which
to
choose?