Because the '-ing' endingis what is known as a gerund - it generally denotes an on-going process - "he is running", where it functions as a noun. In the belief situation it is a current status - "I believe you" is best.
CORRECTIONS (Dec. 2, 2015 by Kezia)
No, in that case, "believing" and "running" is still a verb. If the sentence was "My believing in you is unreal" or "My running shouldn't be the cause of your sadness," then "believing" and "running" are considered to be gerunds.
The root of the word "ungrammatical" is "grammar."
Believing is right
A. Ungrammatical. You cannot move verbs and adjectives around as freely as you can with some adverbs. "The brown cow ate the grass" or less likely "The cow ate the brown grass." The adjective normally precedes the noun, and an article (the) is ALWAYS followed by a noun, not a verb, although it could precede a gerund.
Speech which isn't spoken the way it should be - for example by merging words together like 'whatsit too ya'.
If you are asking whether there are ungrammatical sentences in sign language, the answer is yes.. If a string of words doesn't fit the grammar of a language, that string is ungrammatical. The question you asked is a good example for English. Since sign languages have grammars, there will be many ways to put signs in an order that doesn't fit the grammar of the language.
Ungrammatical is the correct spelling.
The root of the word "ungrammatical" is "grammar."
They are certain their will be a doctor in the office.
It is ungrammatical. It means: "my he imagines"
They are gramatika and negramatika.
it is ungrammatical but it means: "that nothing"
the question is ungrammatical. Restate it.
Good Gooder Goodest
It's ungrammatical. It literally means: "my name Geraldo"
ungrammatical speech
"I'm besotted with thee" is archaic but not ungrammatical.
fuccc u :)