私は草の上に寝た。の英語

I laid myself on the grass.

I threw myself on the grass.

to lie down on the grass―throw oneself on the grass

I slept with my head （pillowed） on the root of a tree―with a root for pillow.

I had a good night's sleep.

I slept very well.

I slept soundly.

I was sleeping the whole time.

I am sitting below a tree.

I was sleeping before I knew it.

I was sleeping the whole time.

I had a little nap.

I had a good sleep.

I was sleeping before I even knew it.

I accidentally fell asleep.

I thought that you were sleeping.

I thought you were sleeping.

I slept plenty.

I got plenty of sleep.

sat on a fallen tree trunk

I fell asleep with a sweater on.

Before I realized it, I was sleeping.

I was asleep till just a while ago.

I was sleeping at that time.

And then I fell asleep sitting.

I awoke to find myself lying on the floor.

I slept like that.

As I was sleepy, I went to bed.

When I noticed it was sleeping.

I was sleeping in a sleeping bag for some time.