相手を選ぶときは慎重でなければならない。
Sentence Analyzer
English Translation
You must be deliberate in selecting a partner.
Furigana
Romanji
Aite o erabu toki wa shinchō denakerebanaranai.
Words
相手
(あいて)
companion; partner; company; other party; addressee; opponent (sports, etc.)
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.
選ぶ
(えらぶ)
to choose; to select
とき
(とき)
regular (stops at every station) Jouetsu-line Shinkansen
は
(は)
topic marker particle; indicates contrast with another option (stated or unstated); adds emphasis
慎重
(しんちょう)
careful; cautious; prudent; discreet; deliberate
だ
(だ)
be; is; indicates past or completed action; indicates light imperative
Kanji
Readings: ソウ、 ショウ、 あい-
Meanings: inter-, mutual, together, each other, minister of state, councillor, aspect, phase, physiognomy
Readings: シュ、 ズ、 て、 て-、 -て、 た-
Meaning: hand
Readings: セン、 えら.ぶ
Meanings: elect, select, choose, prefer
Readings: シン、 つつし.む、 つつし、 つつし.み
Meanings: humility, be careful, discreet, prudent
Readings: ジュウ、 チョウ、 え、 おも.い、 おも.り、 おも.なう、 かさ.ねる、 かさ.なる、 おも
Meanings: heavy, heap up, pile up, nest of boxes, -fold