I am not a native speaker.
I am doing a exercise "Answer the questions about the pictures" from my Grammar Book and I checked Keys at end of the book:
- In A the man is lying on the floor. In B he is standing on the chair.
- In A the woman is writing (a letter). In B she is reading a book.
- In A the man is running. In B he is riding a bicycle.
- In A the woman is driving (the car). In B the man is driving (the car).
I know, that the article "the" indicates that I am referring to a specific instance.
Could you please explain for me:
Why did author use indefinite and definite articles?
Why did author see a difference between phrases: "a bicycle"(indefinite article) and "the car" (definite article), "the chair"(definite) and "a book" (indefinite)?