彼らがなぜそんなに仲が良いのか僕には分からない。彼らには共通点がほとんど無いのだから。

Sentence Analyzer

English Translation

I cannot understand why they are such good friends: they have little in common.

Furigana

彼(かれ)らがなぜそんなに仲(なか)が良(よ)いのか僕(ぼく)には分(わ)からない。彼(かれ)らには共通点(きょうつうてん)がほとんど無(な)いのだから。

Romanji

Karera ga naze sonnani naka ga yoi no ka boku ni wa wakaranai. karera ni wa kyōtsūten ga hotondo nai no da kara.

Words

彼ら (かれら)

they (usually male); them

が (が)

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

何故 (なぜ、なにゆえ)

why; how

そんなに (そんなに)

so much; so; like that

仲 (なか)

relation; relationship

良い (よい)

good; excellent; fine; nice; pleasant; agreeable; sufficient (can be used to turn down an offer); ready; prepared; profitable (e.g. deal, business offer, etc.); beneficial; OK

の (の)

indicates possessive; nominalizes verbs and adjectives; substitutes for "ga" in subordinate phrases; (at sentence-end, falling tone) indicates a confident conclusion; (at sentence-end) indicates emotional emphasis; (at sentence-end, rising tone) indicates question

か (か)

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

僕 (ぼく)

I; me; you; manservant

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

は (は)

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

分かる (わかる)

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

共通点 (きょうつうてん)

common feature

殆ど (ほとんど)

mostly; nearly; practically; well-nigh; almost invariably; all but; just about; almost

無い (ない)

nonexistent; not being (there); unpossessed; unowned; not had; unique; indicates negation, inexperience, unnecessariness or impossibility; not ...; to not be...; to have not ...

だ (だ)

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

から (から)

from (e.g. time, place, numerical quantity); since; from (originator); by; because; since; out of (constituent, part); through (e.g. window, vestibule); after; since