They've got a power and a force
That you've never seen before
They've got the ability to morph
And to even up the score
No one could ever take them down
^^^^^
The power lies on their side
因為最後一句是現在式, 想請問這裡為何用could而非can?
謝謝!

https://tinyurl.com/ycku4wy8 這裡的是歌詞是No one can ever take me down (我在別處聽的影音檔聽到的也是 can )... take them down

前四句都在講之前到現在的狀態，當然是用 could 因為從來沒人打擊過他們。最後一句雖是現在呈現可是這也強調他們從以前到現在都是有能量的。不能用最後一句去推想前一句，反之是前四句推算第五句，你說的 could 部份