What are transitive and intransitive verbs???

A transitive verb can take a direct object without the need for a preposition.
... I ate the sandwich. We watched a movie. She heard a noise. They fixed the car.

An intransitive verb cannot take a direct object; it needs a preposition in order to express a complete thought.
... We talked to the guide. (We can't talk a guide.)
... She went out of the room. (She can't go out the room.)
... They are looking at the view. (They can't look the view, but they can watch or see the view.)

Be careful not to fall into the trap of expecting that every verb that is transitive or intransitive in YOUR own language will be exactly that in the language you are studying!

Examples:
buscar, chercher = to look for (the for is understood, or part of the verb)
---> (one cannot say yo busco para... or je cherche pour...)
regarder, mirar = to look at
escuchar, écouter = to listen to

One interesting point about ENGLISH is that we use (as does German) prepositions to change the meanings of verbs. Classic examples are to break and to get

to BREAK up (with)	to GET into
to BREAK down (in tears)	to GET out (of)
to BREAK into	to GET away (with)
to BREAK through	to GET up / down / into
to BREAK out (of)	to GET by (with)
to BREAK out (in spots)	to GET over (something)
to BREAK (you think of one)	to GET with it (etc., etc.)

Thoughts on word order