Would you like an cup of tea? (unspecific)
It's getting difficult to find good clothes these days! (no article, general statement)
I'd like to buy a new pair of boots. (unspecific)
My mother is the manager. (specific)
May I go to my room, please? (specific)
He hates exercises. (general concept)
John found a wallet in the market. (unspecific)
My elder sister is a student in a college. (unspecific about college, unspecific about which sister)
Young girls are keen on makeup. (no article, general statement about young girls)
My brother is scared of cats. (general concept)
Anthony plays the guitar better than he plays the flute. (specific instruments)
I have a shower every night. (unspecific shower, routine)
They were born in Italy but now they live in Germany. (specific countries)
The humpback whale is the biggest mammal in the world. (specific whale, specific title)
They play baseball on Sundays. (specific day - all Sundays)
There is a woman waiting for you in the living room. (unspecific woman, specific room)
Children are interested in video games. (general statement about children)
Go past the school, then turn on your left, the real estate agent is just there! (specific school, specific agent)
We shouldn't use margarine! (specific product)
Lots of children love fish and juices. (general statement, no article for plural food)