Essential English Grammar

The word there in such a construction is called an expletive (something that fills out the sentence

Declaratave, Interrogative, Imperative, and Exclamatory Sentences1

stated or declared something

is the best teacher

The possibility of a voyage to the moon

have become very important in the U.N.

for weak hitting

or emphasis or variety, we put the predicate first

Draw a single line under any word that belongs with the subjec

However, when the appositive is simple and very closely related to its governing word, no punctuation is used:
My friend Bob has a new car.
We all went to see it.