Are abstract nouns ever countable?

Yes, depending on the context and meaning in a sentence, a noun can be both, countable and uncountable. Such nouns are called dual-use nouns and their countability depends on how they're being used.

For example:

·       Here hair is very long (uncountable)

·       There are three hairs in my soup. (countable- refers to individual strands)

Try putting a number in front of a noun or make it plural. If it works, its countable; if it doesn't, it is probably uncountable.

For example:

Bus: There are fifteen buses in my school. (Correct)

Anxiety: I felt two anxious. (Incorrect as it is uncountable)

Some of the quantifiers that are used with countable nouns include- many, few, a few, several, each, every, some, any.

Examples:

·       There are many buses in the stand.

·       I kept a few chairs in the room.

·       There are several people in the park.

Yes, 'a' or 'an' is used with only singular countable nouns, not plurals.

For instance:

·       A cat is climbing up the tree.

·       There is an apple in the fridge.

·       There is a bus on the road.

Demonstrative pronouns are words used to point toward specific people, objects, or ideas without directly naming them.

Most common ones are this, that, these, and those. They help the speaker or writer indicate whether something is near or far, and whether it is singular or plural. For example, “This is my bag” or “Those are your shoes.” They are widely used in daily communication to bring clarity and emphasis.