That's the truth
It is contracts to it's and functions as the basic subject-verb pairing for impersonal statements.
English uses it is to describe conditions (it is raining), make identifications (it is John at the door), and introduce delayed subjects (it is important that you listen).
The construction opens countless idioms: it is what it is signals resigned acceptance, while as it is means given the current situation.
IDEA.org / Words / it is
That's the truth
It is contracts to it's and functions as the basic subject-verb pairing for impersonal statements.
English uses it is to describe conditions (it is raining), make identifications (it is John at the door), and introduce delayed subjects (it is important that you listen).
The construction opens countless idioms: it is what it is signals resigned acceptance, while as it is means given the current situation.
Related — exists (Has actual being); being (Existing as something); presence (State of being somewhere); reality · that's · here · now · truth · fact · in fact · there · essence · am
CERTAINTY/UNCERTAINTYit is ≠ it could be; is it · possibly
I statements: I am, I feel, I think, I believe, I want
it, is, its, itself
Word data: Linguabase (CC0) · www.idea.org/words/it_is