1 answer 
"To" is a preposition that is used to express direction of movement or actions.
I am walking. --> where to? --> I am walking to school. (direction of movement)
I am giving the book. --> to whom? --> I am giving the book to John. (direction of action, indicates indirect object, John)
Where does this bus go?
This bus goes to Berlin. (movement)
To whom are you taking the sweets?
I am taking the sweets to Grandma Samson. (action)
The use of 'to' with a verb is a unique construction that marks the root form of the verb, i.e. "to walk", "to sing", "to love", etc.
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answered Oct 25 '11 at 15:43
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