The phrase "a host of a" is not correct in standard written English.
It is typically used to refer to a large number of something, but the structure is awkward and incomplete.
Example: "The event featured a host of activities for all ages."
Alternatives: "a multitude of" or "a variety of".
Tavis Smiley, a host of a PBS talk show devoted to black issues, moderated the debate.
There are certain things a host of a knitter's convention is obligated to keep in mind, she confided.
Buzz will now be a host of a game, and he shares top billing on the ride's marquee.
He didn't get the pig role, but he did become a host of a program on VH1, "Rock of Ages".
From 1999 to 2007 he was a host of a radio show on WABC-AM with Curtis Sliwa.
Microscopically, many igneous pyroxenes show exsolution textures of thin lamellae of one pyroxene in a host of a different composition.
The ceremony, which celebrates British talent and Hollywood stars with a "strong connection" to the UK film industry, recognised a host of A-list stars, including Ewan McGregor, Samuel L Jackson, Ricky Gervais, Felicity Jones and director Ang Lee.
The movies returned the Riviera competition to the kind of sombre, uncompromising cinema for which the festival is famous, after Woody Allen's popular comedy "Midnight In Paris" and a host of A-listers gave the event a splashy, upbeat opening.
A host of A-list Hollywood stars from Meryl Streep to Lupita Nyong'o, Channing Tatum to Harrison Ford, and prestigious British actors including Colin Firth, have been revealed as awards presenters at this Sunday's Golden Globe awards.
And it is always the place to be if you're into celebrity-spotting, with a host of A-listers gracing the paddock and enjoying the hospitality in the land of high-flying excess, glamour and glitz.
DeGeneres joins a host of A-list comedians ― including Amy Schumer, Dave Chappelle and Chris Rock ― who've been granted Netflix specials in recent years. .
