1. Which person did he look at?
- He looked at a man in the park.
2. Which person did he look at?
- He looked at the man in the park.
[Which answer is correct? Do we have to use 'a man' or 'the man'?]
The answer to #1 means there were lots of men in the park and he looked at one of them.
The answer to #2 means that there was only one man in the park and he looked at him.
