Here are some explanations and exercises about using 'a' and 'the':
- How to use 'a little', 'little', 'few' and 'a few'.
- How to use 'a' and 'the' with bed / home / work / town.
- How to use 'the' and 'no article' with superlatives.
- How to use 'some', 'any' and 'no article'.
- How to use 'the' and 'no article' with geographical names.