一切皆有可能说成everything are possible正确吗？

不对。要用单数。everything is possible

everything is possible!
nothing is impossible!

everything is possible
nothing impossible

不对
is
没看过中央五的广告吗 朗朗上口的东西啊！

Anything is possible!

呵呵， anything更好一点，谓语用单数。