No; grinned is a verb. An adverb "modifies" a verb, and it usually ends in -ly.
No. It may be an adjective (grinning faces) or a gerund (Grinning seemed an appropriate response.)
It is the present participle of the verb to grin.
No, it is an adjective. The adverb form is beneficially.
adverb
No, it is not an adverb. Became is the past tense of the verb become.
Yes, it is an adverb. It is the adverb form of "ready" and means quickly and easily.
Yes, you can change patience into an adverb. The adverb is "patiently."
It's not an adverb at all, but an adjective! "You look cheerful!"The adverbial form is "cheerfully", or, to be colourful, "cheerily". "He grinned cheerfully at the crowd."Cheerfully is an adverb of manner as it tells us how the verb is done or happens.
I/You/We/They have grinned. He/She/It has grinned.
The present perfect tense of "grin" is "have grinned."
I grinned at the person telling the joke.
The boy grinned at his mother because he had an idea.
The People Who Grinned Themselves to Death was created in 1987-09.
yes
Grinned
of Grin
Since you saw him grin when you did I am sure he knows he grinned at you.
everyone
yes