She grinned widely when she saw her surprise party. The mischievous child grinned after pulling off the prank. As he approached the podium, he grinned, feeling a rush of confidence. The dog grinned as it played fetch, tail wagging with excitement.
When I opened the door, the young fellow grinned sheepishly.
I/You/We/They have grinned. He/She/It has grinned.
I/You/We/They have grinned. He/She/It has 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
the child gave a grin after having a super chocolate Sunday
Sentences can be constructed by using that word as an adjective or as a verb.
Since you saw him grin when you did I am sure he knows he grinned at you.