その疲れてしまった少年は深く眠っています。の英語

That tired boy is sound asleep.

a light [heavy] sleeper

The boy is peeking under the bed.

The boy opened his sleepy-looking eyes.

That boy probably hadn't slept much.

the deep sleep into which a person falls while sleeping, called sleep

vigilance is especially susceptible to fatigue

We found the boy fast asleep.

We found the boy sound asleep.

The boy tossed about all night.

Children get tired quickly.

It seems like getting enough sleep has helped me get over my tiredness.

in a drowse

The boy went to bed with his socks on.

I made frantic efforts to drive away the drowsiness.

The boys sleeping in that tent over there had slept in.

I found the boy fast asleep.

I found the boy sound asleep.

When I went to look, I found the boy fast asleep.

The little boy is afraid of the dark.

That young man is very keen on cycling.

Plenty of sleep is vital to children.

The boy remained silent.

fall asleep fast, as when one is extremely tired

The boy stood still in horror.

Put out the light so that you can get a good sleep.

The boy hid behind the door.

That boy's hair is black.

The boy maintained mulish dumbness.

That young boy wanted to eat lunch.