My question is what happens to this verb when the complement becomes plural, that is, in some cases as the following.
There is\are? a television, a radio, a computer,,,
- There is\are a parking lot, some trees, some buildings....
Singular or plural? that is my question
There is + singular (TV, a parking lot, a radio, a computer)
There are + plural (some treest, somme buildings)
Here's an exercise you can practise with:
http://www.usingenglish.com/quizzes/quiz.php?id=62