"Beber" is "to drink". "Tomar" has a lot of meanings, and the main translation is "to take". "Tomar" can mean also "drink" or "eat" ¿Nos tomamos algo en ese bar? = Do you want to have a drink or eat something there? "Servir" does not mean "to drink". The waiters "sirven" the food or the drink, and the clients eat or drink it. A waiter: ¿Le sirvo algo? The client: Tráigame una sopa, por favor.

Acércate a la ventana y mira qué ocurre fuera. "Ve" is an imperative of the verb "ver". "Qué pasa fuera" is an interrogative clause and the direct object of "ve". "Qué" has an stress because is interrogative here. ¿Qué está haciendo Juan? ---> Mira qué está haciendo Juan. When "que" is not interrogative, it has not an stress: "Veo que un pájaro está cantando = I see that a bird is singing." "Al + infinitive" = "cuando + indicative" Todas las mañanas, cuando se levanta, mi abuelo toma una taza de té "Todas las mañanas mi abuelo se levanta y toma una taza de té" has the same meaning.

In the first sentence "ve que pasa por fuera" is an order and means "see (or find out) whats going on outside!". in de 2nd sentence "al levantarse" you can change it tha way you did, but for the record it means "at wake up" in the moment he wakes up is when he drink his tea. Well thats all, i hope it helps, bye

hola ann! y ve qué pasa fuera = and look what happens outside al levantarse = cuando se levanta