That girl is very pretty
There girls are very pretty.that Just change "girl is" to "there girls are"
It is / was that… It is / was not until + emphasis + that + others
It is/was… that… Emphatic sentence patterns in English
It is / was not until + emphasis + that + other emphasis sentence patterns
One for each!
It is I that teach you English.
It was not until I taught you Egnlish that you could grasp it.
It is certain that
it is certain that he can get good grades
I'm sure he'll get good grades