Question

I’m going to Xi'an next week. Have you anything ____________to your parents?为什么这样做/

Answer 1

很简单。1."have
you
anything
to
be
taken
to
your
parents?
中的"to
be
taken"表示被动意，anything是逻辑主语。anything虽为逻辑主语，但意义上只可以是被
take.所以必须被动式。
2.而i
have
a
lot
of
work
to
do.
成分很清晰，意指我有很多事要做，主语i
和work
是主动的关系，所以直接可以用不定式，而不需用被动结构。