Graded and ungraded adjectives
Pattern 27: so ADJ that
The adjective follows so and is followed by a that-clause. The that-clause indicates a consequence of the degree of a quality that someone or something has.
Alec is the sort of actor whose identification with a role is so complete that the man vanishes without trace into the characterization.
Hospitals are also finding it so hard to recruit nurses that they're raising nurses' salaries.
The afternoon slump is so important that one scientist claims it causes many road deaths when drivers nod off at the wheel.
They are so keen to have the plane that they are hiring for next year till they can have their own.
There is no job so simple that it cannot be done wrong.
Sometimes so and the adjective are put first for emphasis. The Subject then comes after the verb.
So risky was the venture that Mrs. Johnson prayed and cried for days before she felt she could take the chance on losing every piece of furniture she had.