1、虚拟语气可以用来表示假设、猜想、建议、主观愿望、夸张或者空想,即非客观存在的事实.这道题中根据语意应该是说“我也不想这样”或者“我本应该怎样”类似的,即应该是表示的一种主观愿望,而非事实存在.所以应该用虚拟语气.如果你想知道更具体的我可以再给你说下,这里仅就这道题来说.
2、比如说,I would have come earlier,but I didn't know that you were waiting.此处用的就是虚拟语气.
其实这句与If you had come earlier,you would have met him.是同一种判断的方法,核心意思是相同的.互相参照着理解下.