モスクワの冬は寒いから帽子をかぶったらいいよ。

Moscow

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

winter

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

cold (e.g. weather); uninteresting (esp. joke); lame; dull; weak; corny

from (e.g. time, place, numerical quantity); since; from (originator); by; because; since; out of (constituent, part); through (e.g. window, vestibule); after; since

hat; cap

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 put on (one's head); to wear; to have on; to pull over (one's head); to crown (oneself); to be covered with (dust, snow, etc.); to pour (water, etc.) on oneself; to dash on oneself; to ship water; to bear (e.g. someone's debts, faults, etc.); to take (blame); to assume (responsibility); to shoulder (burden); to overlap (e.g. sound or color); to be similar; to be redundant; to be fogged (due to overexposure, etc.); to close; to come to an end; to get a full house; to sell out; to blunder; to bungle; to fail; to be deceived

good; excellent; fine; nice; pleasant; agreeable; sufficient (can be used to turn down an offer); ready; prepared; profitable (e.g. deal, business offer, etc.); beneficial; OK

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