(will be using) and (would be using) is what tense?

兩個都是 Future Continuous Tense，不是 simple future tense。

Future Continuous Tense （將來進行式）

這個 Tense 是用來表達一些在將來會進行中的動作。

E.g.：Don't phone me this afternoon. I will be playing football.

E.g.：You can come to my home next night. I will be doing homework.


其他特性如下：

1. 就如 Present Continuous Tense 一樣，可以用 Future Continuous Tense 來交待一些已經計劃了的動作（scheduled action）。

E.g.：I'll be doing some shopping this afternoon. Can I get you anything?


圖片參考：http://www.crazyhill.com/hung/uimage/tense.17.gif
Note：同時間咱們亦可以以 Present Continuous Tense 來交待相同的情況

E.g.：I'm doing some shopping this afternoon. Can I get you anything?

N.B. 在indirect speech 時, He said," I will be using." 會變成 He said he would be using.

will=modal verb
would=pt modal verb