Verb + Preposition

Many verbs need a fixed preposition before their object. It often differs from other languages, so learn the verb and its preposition together:

• on: depend on, rely on, insist on, concentrate on, spend (money) on
• for: wait for, pay for, ask for, apply for, thank someone for, apologise for, search for
• to: listen to, belong to, write to, reply to, happen to
• at: look at, laugh at, smile at
• in: believe in, succeed in
• with: agree with (a person)
• of: consist of, remind someone of
• about: care about, worry about

In questions the preposition stays with the verb and often goes to the end: Who are you waiting for? After a preposition, a verb takes the -ing form: He insisted on paying. Say depend on, never depend of.