1. His ambition to become the world champion was understandable.
2. Our teacher, Henry Evans, complies this dictionary.
3. We heard the news that his team had won.
4. The idea of helping poor people in underdeveloped country was normal.
5. He had only one aim, to earn a lot of money.
6. We Koreans live on rice.
(Are they all grammatical? They are example sentences containing apposition, right?)
2 and 6 have appositives in them.
In 2, the word is "compiles," not "complies."
All other sentences are correct, but don't have appositives in them.