まもなく春になるだろう。

soon; before long; in a short time; lacking time to ...; without time to ...

spring; springtime; New Year; prime (of one's life, etc.); adolescence; puberty; sexuality

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 become; to get; to grow; to be; to reach; to attain; to result in; to prove to be; to consist of; to be composed of; to succeed; to be complete; to change into; to be exchanged for; to play a role; to be promoted; to do ...

be; is; indicates past or completed action; indicates light imperative