Can i be able to change the language in Microsoft Office?

[KillShift]

Hey guys!

Please read carefully because i can't really explain the problem well:

Is there any way to change the language (from Portuguese) to purely English? It really helps me understand better if i am given a chance to have it.

Though the "Ingles" was the default language there, i still don't consider it an easily fixable problem.

Here's the screenshot:



I'd appreciate your answers if you thoroughly explain the solution.