Level A1
Zero Article
plural things in general and things we do not count take no a and no the; the comes back when we both know which ones.
I like dogs.
Look: I like dogs. You mean dogs in general, not some dogs we already know.
Forms
I like dogs.— dogs in general: no little wordCats like milk.— milk is not counted: no little wordThe dogs are big.— these very dogs: the comes back
A common mistake
Wrong: I like the dogs.
Right: I like dogs.
Here we mean dogs in general, so the has nothing to point to. We say: I like dogs.
More examples
Sparrows are small birds.
Sparrows in general, and small birds in general: Sparrows are small birds.
We have lunch at one.
Names of meals usually go without the: We have lunch at one.