Question

1. Watching a variety of shows might expose us to things we might otherwise never come across in our own lives.
(What is the meaning of 'come across' here? Some other similar expressions, please?)

2. We can bond over shared views by watching some TV shows together. (Is this sentence correct? Can we use 'over'? What about 'about' or 'on'?)

3. There might be a certain benefits to watching television.

4. There might be a certain benefits in watching television.

5.There might be a certain benefits of watching television.

6. There might be a certain benefits on/about watching television.
(Which preposition do we have to use among Sentence 3-6?)

Answer 1

1. "come across" could mean things we
-- see
-- hear
-- experience
-- etc.

2. I think "over" works well here. Another might be "because of" or possibly "by means of."

In 3-6, you need "benefit" (singular form) -- or omit "a" if you want that word to be plural. And I think the best preposition there is "to" with "in" coming in a close second! I wouldn't use the others.