日本は１９４１年１２月に合衆国に宣戦布告をした。

Sentence Analyzer

English Translation

Japan declared war on the United States in December, 1941.

Furigana

日本(にっぽん)は１９４１年(ねん)１２月(じゅうにがつ)に合衆国(がっしゅうこく)に宣戦(せんせん)布告(ふこく)をした。

Romanji

Nippon wa ichi kyū yon ichi nen jūnigatsu ni gasshūkoku ni sensen fukoku o shita.

Words

日本 (にほん、にっぽん)

Japan

は (は)

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

一 (いち)

one; best; first; foremost; beginning; start; bottom string (on a shamisen, etc.)

九 (きゅう、く、ここの、この、ここ)

nine

四 (し、よん、よ)

four

年 (とし)

year; many years; age; past one's prime; old age

十二月 (じゅうにがつ)

December

に (に)

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

合衆国 (がっしゅうこく)

federal state; United States of America

宣戦 (せんせん)

declaration of war

布告 (ふこく)

edict; ordinance; proclamation

を (を)

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.

為る (する)

to do; to cause to become; to make (into); to turn (into); to serve as; to act as; to work as; to wear (clothes, a facial expression, etc.); to judge as being; to view as being; to think of as; to treat as; to use as; to decide on; to choose; to be sensed (of a smell, noise, etc.); to be (in a state, condition, etc.); to be worth; to cost; to pass (of time); to elapse; verbalizing suffix (applies to nouns noted in this dictionary with the part of speech "vs"); creates a humble verb (after a noun prefixed with "o" or "go"); to be just about to; to be just starting to; to try to; to attempt to