"El actor habla con el rey."

To say "the actor is talking with the king" you would use hablando instead of habla. The endings -ando (for verbs ending with -ar) and -iendo (for er and ir verbs) are used for the present progressive instead of the ending -ing that we use in English.

You are absolutely correct señor pingüino. For example HABLO can be interpreted in English as I talk or I am talking or indeed I do talk (last form very important for negation, I don't (do not) talk and questions - do you talk?) And you would translate all of these in general from English to Spanish with 'hablo'. Only when you mean I am talking right now do you use estar (to be) and the present participle so in this case: estoy hablando. However Duo has not yet learned this so if you want to keep your hearts translate as the simple present eg I talk, and rejoice silently that you now know more,vthan Duolingo!!

As somebody else pointed out, the personal a is for direct objects.

In case you don't understand, the direct object is the object directly receiving the action. The noun being 'verbed'. To have a direct object you need a verb (kick, throw, volley, etc) and an object being 'verbed' (kicked, thrown, tossed...)

There is no direct object mentioned. The verb is 'speak'. We speak words, sentences, phrases, etc. Only such things could be 'spoken' (I use the made up word 'verbed'). Since the king isn't being (can't actually be either) spoken, the king is not the direct object. You can see a king. You can call a king. You can hear a king. I suppose you can even throw or kick a king if he lets you. You can't speak a king. You speak (words) to the king.

Angela, the personal "a" works ONLY for direct objects.

Okay.

yeah i know right?

And the Italian word for king is re, while the French word for king is roi

Hmm.. the word "T-Rex" makes sense now!