1. I like an apple. (one)

Question

2. I like pears. (generic use)
3. I like a drama club. (generic use)
4. I go to a sports club. (one)
5. A dog is a faithful animal. (generic use[front]/ one [back])
6. I like going to a soccer club.(one)
7. We have a baseball club and two soccer clubs. (one, two)

(Are my explanations correct? the use of 'a' and 'plural nouns')

Answer 1

They seem correct to me! =)