Meaning: This sentence is about a child who slept well all night.
Choice of Words: Child, slept, soundly, all, night are all common words that are easy to understand for an English learner.
Alternative Expressions
The little one slumbered peacefully through the night.
Meaning: This sentence conveys a similar message to the first one, but it uses more descriptive language to create a more vivid image of the child's peaceful sleep.
Choice of Words: The little one is a term of endearment for a young child. Slumbered is a more poetic word for slept, suggesting a gentle and undisturbed sleep. Peacefully means without any disturbance or worry. Through the night has the same meaning as all night.
The young sleeper drifted off to dreamland and slept undisturbed until morning.
Meaning: This sentence paints a picture of a child who fell asleep easily and slept soundly throughout the night.
Choice of Words: The young sleeper emphasizes the child's age and the fact that they are sleeping. Drifted off to dreamland is a poetic way of saying that the child fell asleep. Undisturbed means that the child's sleep was not interrupted by anything. Until morning means until the sun rose.