彼が在宅しているかどうか確かめなくてはならない。

Sentence Analyzer

在宅している どう 確かめなくて はならない

English Translation

I must make sure whether he is at home or not.

Furigana

(かれ)在宅(ざいたく)しているかどうか(たし)かめなくてはならない。

Romanji

Kare ga zaitakushiteiru ka dō ka tashikamenakute wanaranai.

Words

(かれ)
he; him; his; boyfriend
()
indicates sentence subject (occasionally object); indicates possessive (esp. in literary expressions); but; however; still; and
在宅 (ざいたく)
being in; being at home
()
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
如何 (どう、いかが、いか)
how; in what way; how about
確かめる (たしかめる)
to ascertain; to check; to make sure
()
if ... then; when; and; why don't you...?; the more (one does something); because; since

Kanji

Readings: ヒ、 かれ、 かの、 か.の
Meanings: he, that, the
Readings: ザイ、 あ.る
Meanings: exist, outskirts, suburbs, located in
Reading: タク
Meanings: home, house, residence, our house, my husband
Readings: カク、 コウ、 たし.か、 たし.かめる
Meanings: assurance, firm, tight, hard, solid, confirm, clear, evident