It was not till daybreak that he went to sleep.

My father is still ill in bed.

I went to sleep about 10 o'clock.

I had a hard time putting the kid to bed.

I was so excited that I could not fall asleep.

The boy soon went to sleep.

When we go to bed, we say "good night".

I've had a lot on my mind recently and have had trouble falling asleep at night.

At that time, I was still not asleep.