彼らの計画が成功するかどうか疑問に思っている。

Sentence Analyzer

English Translation

I have doubts about the success of their plan.

Furigana

彼(かれ)らの計画(けいかく)が成功(せいこう)するかどうか疑問(ぎもん)に思(おも)っている。

Romanji

Karera no keikaku ga seikōsuru ka dō ka gimon ni omotteiru.

Words

彼ら (かれら)

they (usually male); them

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

計画 (けいかく)

plan; project; schedule; scheme; program; programme

が (が)

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

成功 (せいこう)

success; hit

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

如何 (どう、いかが、いか)

how; in what way; how about

疑問 (ぎもん)

question; problem; doubt; guess

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

思う (おもう)

to think; to consider; to believe; to think (of doing); to plan (to do); to judge; to assess; to regard; to imagine; to suppose; to dream; to expect; to look forward to; to feel; to desire; to want; to recall; to remember