I always get confused with "That"

[rems]

Is there a wrong or right with these?
I wish that you were here
or
I wish you were here
and
I like it how you're here
or
I like it that you're here

Sorry about my setting. I'm learning still!

[Bridget]

That is very frequently omitted in such constructions, especially in informal spoken language. Omission of that is particularly common after think:

I think he’s bored with his job.

Omission of that is also common where the subject of the reporting clause and the reported clause are the same:

The guy now claims he didn’t do it.

There is a tendency to retain that in more formal contexts. The retention of that is especially evident when the reporting verb is in the passive, and in coordinated reported clauses:

[from a book about volcanoes]

In chapter three it was mentioned that the effect of getting large volumes of water mixed up in a volcanic eruption is to make it more violent.

[MrPedantic]

Hello Rems,

1. I wish that you were here.

— fine.

2. I wish you were here.

— fine.

3. I like it how you're here.

— this might seem incorrect to some speakers.

4. I like it that you're here.

— this also might seem incorrect (or awkward) to some speakers; though probably not as many as #3.

Alternatives for #3/#4 would be:

5. I like the fact that you're here.
6. I like your being here.

Best wishes,

MrP

[Marius Hancu]

> 3. I like it how you're here.

MrP is right, I, for one, don't like it.

[rems]

'I like the fact that you're here and I like your being here.'
I wouldn't have even thought of "being here".
I Like the fact that you can help me understand! I like my being here. (If that works)