私は顔の上にハンカチをかぶせて眠った。

I; me; private affairs; personal matter; secrecy; selfishness

topic marker particle; indicates contrast with another option (stated or unstated); adds emphasis

face; visage; look; expression; countenance; honor; honour; face; influence; notoriety

indicates possessive; nominalizes verbs and adjectives; substitutes for "ga" in subordinate phrases; (at sentence-end, falling tone) indicates a confident conclusion; (at sentence-end) indicates emotional emphasis; (at sentence-end, rising tone) indicates question

handkerchief

indicates direct object of action; indicates subject of causative expression; indicates an area traversed; indicates time (period) over which action takes place; indicates point of departure or separation of action; indicates object of desire, like, hate, etc.

to cover (with something); to put on (e.g. on someone else's head); to plate something (with a metal); to pour or dash a liquid (on something); to charge (a person with a guilt)

to sleep (not necessarily lying down); to die; to close one's eyes