我有一个好朋友。(不能用there be, 因为这是拥有的意思。)
I have a good friend.
There are many similarities between us.
He has (formed) many good habits.(不能用there be, 因为这也是拥有的意思。)
There is a friend of mine.
There are a lot in common between him and me.
There are many good habits in him.