It seems you haven't got my question. I mean I think in English, there are three ways to talk about a type of things. It has nothing to do with a particular single thing (so-called "the bicycle") or a particular group of things (bicycles). What I care about is the ways of expressing the type of things in a general sense. How would you explain the following sentences?
The tiger is without doubt the most magnificent of the big cats.
A child needs love and affection.
Both of them refer to all things of a particular type, but why one uses "the..." while the other uses "a..."? What's the difference?
Student or Learner