“The "GO DO SOMETHING" Family of Colloquial Expressions There are several variants of "go do" in American English. All are used informally in conversation, and almost never in formal writing.” -- 'I think I found an answer that could help you on this website (put a link to the website here). On that site, they said, "https://www.englishforums.com/English/GoDoSth/wkwx/post.htm". ' --

First of all, " he is never ever watch that before." is incorrect. You should say "he has never seen it." Secondly, you wouldn't say "go to watch it" or "go watch it", mostly because it's a little rude and it would be more polite to say : "you should see that movie, it's awesome!" or "that new HP movie is awesome, you've gotta (got to) watch it" Finally, your last question also needs correcting: Is there another way to say? should be "is there another way to say this?"