君の問題は心にとめておくよ。

you; buddy; pal; monarch; ruler; sovereign; (one's) master

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

question (e.g. on a test); problem; problem (e.g. societal, political); question; issue; subject (e.g. of research); case; matter; question (i.e. doubt); public discussion; controversy; trouble; problem; inconvenience; difficulty

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

mind; heart; spirit; the meaning of a phrase (riddle, etc.)

at (place, time); in; on; during; to (direction, state); toward; into; for (purpose); because of (reason); for; with; by; from; as (i.e. in the role of); per; in; for; a (e.g. "once a month"); and; in addition to; if; although

to stop; to turn off; to park; to prevent; to suppress (a cough); to hold back (tears); to hold (one's breath); to relieve (pain); to stop (someone from doing something); to dissuade; to forbid; to prohibit; to notice; to be aware of; to concentrate on; to pay attention to; to remember; to bear in mind; to fix (in place); to fasten; to tack; to pin; to nail; to button; to staple; to detain; to keep in custody

indicates certainty, emphasis, contempt, request, etc.; used when calling out to someone; used to catch one's breath or get someone's attention; yo!