It is unwise for they to turn down this proposal.这句话对吗?

问题描述:

It is unwise for they to turn down this proposal.这句话对吗?

for them

It is unwise of them to turn down this proposal.
他们拒绝这个建议很不明智.

THEY 应换成Them .
两个词用处不同. THEM 是THEY的宾格

It is unwise for them to turn down this propsal.
他们拒绝了这一建议是不明智的。

It is unwise for them to turn down this propsal.

It is unwise of them to turn down this proposal.