这里最好用as，不用which

有读者问： 有这样一句话：

(1)He made up his mind quickly, as was his nature.

这里可用which替代as吗？

这里用as最好，因为as强调与主句和谐一致，再如：

(2)She has married again, as seemed natural.

如用which，则强调给以新的信息，如：

(3)He married her, which was unexpected.