The phrase "a superb form" is correct and usable in written English.
It can be used to describe something that is in excellent condition or of high quality, often referring to physical appearance or performance.
Example: "The athlete was in a superb form, showcasing her skills during the competition."
Alternatives: "an excellent state" or "a remarkable condition."
This will come to be the crux of the story, but in the meantime Andrew is too busy coping with all the other new influences in his life – in the form of a superb cast of characters.
Ms. Foster, a strong dramatic dancer, and Mathew Williams, dynamic in his superb form, ended a love duet with a tender erotic touch, and Edmee Cherdieu's solo had a joyful abandon that contrasted with Seiko Fujita's perfect form within a trio that included Christiana Toler and Wendy Mejia.
As they had at Stoke last month, Arsenal came up against a young English goalkeeper in superb form as Forster produced a succession of fine saves.
Norwich, initial favourites for automatic promotion, had never quite made a solid case despite superb form under the young Scottish manager Alex Neil; Ipswich, largely written off despite benefiting from the wiles of Mick McCarthy, had entered 2015 at breakneck speed but tailed off to the extent that only an unlikely win for Reading at Derby confirmed sixth place.
The Bang on a Can All Stars, in superb form, filled out the program with an excerpt from Brian Eno's Minimalist drone classic, "Music for Airports," in an arrangement by the group's clarinetist, Evan Ziporyn, and Michael Nyman's "Manhatta," a 2003 score for Paul Strand's 1921 silent film, which was shown during the performance.
The talented 20-year-old was in superb form with a 100 off only 46 balls to equal the fourth-fastest one-day century in domestic cricket.
Daniel Mays is on superb form as a jittery spiv who keeps shifting his loyalties and who relies on the support of Rupert Grint as his acolyte.
City's early superiority should have brought a goal but they found Stoke keeper Sorensen in superb form as he formed a one-man barrier of defiance.
Yashin - known as 'the Impregnable Spider' - was in superb form and an inspired performance in the final ensured that Milan Galic's deflected effort was all the Yugoslavs had to show for 90 minutes of domination.
