Please show me example sentences with there is and there are.
Tell me as many daily expressions as possible.

"Is" is singular and "are" is plural.

There is one example. There are two examples.

There is only one way to do this.

Are you sure? I think there are many ways to get the same result. The method you employ depends on your preference.

Do you want to waste time debating how many methods there are or do you want to finish this task quickly?

Your way of doing things isn't terrible, but there is something to be said for considering all our options.

Sure there is.

Don't be annoyed. When there are multiple people involved in a project, it's best to review all of their ideas. You never know what you're overlooking.

OK. We'll see what options there are, then pick the best one. Happy?

The happiest there is.

@_adrianzeballos You used "it" correctly. There are some situations this rule does not cover, but usually "it" refers to something we have already mentioned or discussed--in this case, the specific grammar rules you asked about. If you're pointing out something new, bringing up or bringing attention to something that hasn't already been referenced, you need to use that or this. Or, if you're talking about a specific item out of many, you cannot say "it." No one will know which one you're talking about.

It (the grammatical concept) is a bit tricky at first, but you'll get the hang of it (the same concept. Since this is the subject of our conversation right now, I can refer back to it without having to specify.)

And that (the comment I'm posting, which has to be specified since this is the first time I'm talking about it) pretty much sums it (the question we're addressing) up.