如：we were relieved to hear that she was out of danger.此处的谓语动词是were，而relived是动词的形容词化，能否看成be +done 构成的谓语动词；
再如he is aching for his mother.此处的aching也是动词的形容词化，能否将谓语看成is aching的进行时态。
再如：I was prevented from doing the work.这里就不可以看成动词的形容词化。
两者怎么样有效区别，即遇见be+动词的分词形式，是将整体看成谓语动词还是看系动词，请老师多给我举两个例子。
We were relieved to hear that she was out of danger. 这不是动词relieve形容词化，而是动词的过去分词演变为形容词，词典已经给出形容词的词性。句子为系表结构，表示主语所处的状况。假如你把be relieved剖析为被动语态，则是表示表示松了一口气这个动作。比如我把这个句子改一下：
When we heard that she was out of danger, we were relieved. 这就是被动语态表示短暂动作了。
He is aching for his mother. = He is longing/yearning for his mother. 这是进行时态，不是系表结构。aching在此不是形容词。
