Try as he might , he couldnt open the door.

请问这里Try as he might 和相等,是might的特殊意义使用方法吗?

《朗文当代高级英语辞典》第六版英英英汉双解版第1630 介绍了 might 的这种使用方法:

10. ALTHOUGH ...... 虽然 ,或许 [表示尽管某事可能是事实,但与其不同或相反的事也是事实]:Try as I might , I couldnt work out the answer. 虽然我非常努力,但仍然解不出答案。