was down on all fours

Both his hands and his knees were in contact with the floor.

CJ

thank you so much.
Another question about preposition at the end of the mentioned sentence:
"... looking for the keys to his car"
Is it right if the sentence become "... looking for the his car's keys" or "... looking for the keys of his car"
I think it's not good with "To" preposition.

Use ',,,looking for his car keys'.

mirmohamadI think it's not good with "To" preposition.

The keys to his car is very natural. It means the key that will unlock and start his car.

You can also use it for ideas:
Here are the keys to success:
1. Stay in school and finish your degree.
2. Don't play computer games.
3. Eat healthy food.
4. Get physical exer

The man was down on all fours . . .

It's much more common to say The man was down on his hands and knees . . .

The word 'down' is often omitted.

Clive

mirmohamad Could you please more describe it:"The man was down on all fours in the store looking for the keys to his car."

She dropped something and had to get down on all fours to find it.