would be doing 什么意义啊 跟 would do 差别在哪?

would be doing 什么意义啊 跟 would do 差别在哪? would be doing would like后面跟动词的什么形式?doing or to do sth? would be doing是什么时态的啊? it would be后面应该跟什么? would 和 will be doing would be doing 是什么时态 would rather do还是doing? would like后面可以跟to do sth也可以跟名词是吗?可以跟doing would ,would be 什么区别 请问would be doing 和have been doing 有什么区别 两个的意思貌似都是过去一直在做某事啊 it would have been better to 并说出与it would be better to do的差别