http://bit.ly/maelt_delex
To go for a walk is not used in the same way as to walk. English abounds in delexical verbs. In to take a photo, to have a bath, to do your homework, to give a shout, to make an impression etc., the actual verb is more or less meaningless, i.e., it is not lexical. Rather, the meaning is carried by the noun, while the phrase functions as verb, but not a normal transitive or intransitive verb. The delexical verb structure is its own Verb + Object kernel of an English clause.
These are not difficult to learn: the difficulty lies in knowing when to use to photograph and when to use to take a photo.
give a smile
give something a try
give someone a rest/break
have/take a bath/shower
have preference for
have a break/rest
have a dream
have a naughty
make a guess
make a start
make a friend
make a fuss
make a decision
take a bow
take a breath
take control