1. The experiment turns out to be very successful,as was expected.
这里的主句用一般现在时,为什么从句用一般过去时?
2. The experiment turns out to be very successful,which we hadn't expected.
这里主句用一般现在时,为什么从句用过去完成时?
3. 这里的as在从句中作主语,指代前面整个主句的内容,然后which在从句中不作主语,也是指代前面整个主句的内容是吗?