明日晴れるかどうかわからないが、もし晴れたら私たちはピクニックに行く。

tomorrow; near future

to clear up; to clear away; to be sunny; to stop raining; to refresh (e.g. spirits); to be cleared (e.g. of a suspicion); to be dispelled; to be banished

indicates a question (sometimes rhetorical); or; whether or not; some- (e.g. something, someone); indicates doubt, uncertainty, etc.; emphatic prefix; suffix forming adjectives or adverbs; in that way

how; in what way; how about

to understand; to comprehend; to grasp; to see; to get; to follow; to become clear; to be known; to be discovered; to be realized; to be realised; to be found out

indicates sentence subject (occasionally object); indicates possessive (esp. in literary expressions); but; however; still; and

if; in case; supposing

we; us

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

picnic

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 go; to move (in a direction or towards a specific location); to head (towards); to be transported (towards); to reach; to proceed; to take place; to pass through; to come and go; to walk; to die; to pass away; to do (in a specific way); to stream; to flow; to continue; to have an orgasm; to come; to cum; to trip; to get high; to have a drug-induced hallucination