To sleep is a common infinitive after verbs such as go, need, or want. Of sleep usually appears inside a noun phrase such as lack of sleep or hours of sleep.
To sleep is the normal infinitive form after many verbs. Of sleep is not usually a direct alternative; it commonly follows another noun, adjective, or quantity expression.
These forms are not interchangeable. Choose the construction by meaning, not by which preposition appears most often.
To sleep functions as an infinitive after verbs and expressions about rest or intention.
Of sleep commonly follows a noun that measures or describes sleep.
Of sleep is natural after nouns such as lack, loss, or shortage.
The same subject can take different constructions because each sentence answers a different question.
Some combinations appear in real text but do not mean what learners often assume.
Of sleep usually needs a word before it, such as hours, lack, or quality.
✕ I need of sleep. ✓ I need sleep.To sleep is a verb form, not a quantity expression.
✕ She got to sleep last night. ✓ She got some sleep last night.Sleep can often stand alone as a noun.
✕ Healthy adults need of sleep. ✓ Healthy adults need sleep.Choose the expression that matches the intended meaning.
Paste the complete sentence below. Linguix checks the preposition together with grammar, spelling, punctuation, and style.
Not usually. Say need sleep or be in need of sleep in formal contexts.
It is a standard fixed expression meaning to begin sleeping.
Only if it belongs to a larger phrase, such as “Of sleep, he got very little.” This structure is uncommon.
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