Verbs and Prepositions

Some verbs need a preposition before an object or another verb. The preposition is only grammatical, it doesn't change the meaning of the verb.
Here are some of the most common ones:

• arrive at / in somewhere
  We arrived at the airport.
  We arrived in London.
• belong to somebody
  This book belongs to me.
• borrow something from somebody
  I borrow a book from my classmate.
• concentrate on something / doing something
  I concentrated on studying at the weekend.
• depend on something / somebody
  It depends on the weather.
• explain something to somebody
  The teacher explained the exercise to the students.
• listen to something / somebody
  I listen to music.
• pay somebody for something
  I pay the waiter for the coffee.
• wait for somebody / something
  Wait for me!
• worry about somebody / something Don’t worry about a thing!