Hi, I need help in deciding what type of phrases these are ( Prepositional-Participal, Gerund, Infinitive or absolute)

1. In spite of a sprained ankle, John won the race. (Prepositional phrase?)

2. My work finished, I went home. (Absolute phrase ?)

3. Is that to much to ask you? (Prepositional phrase ?)
4. Searching diligently, he soon found the lost coin. (Gerund phrase?)

5. Accepting Jesus Christ changed his life completely. ( Infinitive phrase?)

6. Where did you come from?