ケイ教授は昆虫を４０年間研究してきた。

Sentence Analyzer

けい教授は昆虫を４０年間研究してきた。

English Translation

Professor Kay has been studying insects for forty years.

Furigana

ケイ教授(きょうじゅ)は昆虫(こんちゅう)を４０年間(ねんかん)研究(けんきゅう)してきた。

Romanji

Kei kyōju wa konchū o yon zero nenkan kenkyūshitekita.

Words

桂 (けい)

knight

教授 (きょうじゅ)

professor; teaching; instruction

は (は)

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

昆虫 (こんちゅう)

insect; bug

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.

四 (し、よん、よ)

four

○ (まる)

circle (sometimes used for zero); 'correct' (when marking); symbol used as a placeholder (either because a number of other words could be used in that position, or because of censorship); period; full stop; maru mark; semivoiced sound; p-sound

年間 (ねんかん)

year (period of)

研究 (けんきゅう)

study; research; investigation