Please explain me about the grammar usage of this sentence ."It's the possibility of having a dream come true that makes life interesting" [closed]

It's the possibility of having a dream that makes life interesting.

Why do they use such a strange structure here?


Your example is an emphatic statement with introductory IT.

Instead of the simple sentence "The possibility of having a dream makes life interesting"

we use this emphatic sentence with the meaning

"Only the possibility of having a dream makes life interesting"

According to Merriam-Webster's Dictionary:

"IT is often used to shift emphasis to a part of a statement other than the subject:

// it was in this city that the treaty was signed."