友人を選ぶときには注意をしてしすぎることはない。

Sentence Analyzer

友人 選ぶ ときに 注意 して しすぎる こと ない

English Translation

You cannot be too careful in choosing friends.

Furigana

友人(ゆうじん)(えら)ぶときには注意(ちゅうい)をしてしすぎることはない。

Romanji

Yūjin o erabu tokini wa chūi o shite shisugiru koto wa nai.

Words

友人 (ゆうじん)
friend
()
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
時に (ときに)
by the way; incidentally; sometimes; occasionally
()
topic marker particle; indicates contrast with another option (stated or unstated); adds emphasis
注意 (ちゅうい)
caution; being careful; attention (heed); warning; advice
為る (する)
to do; to cause to become; to make (into); to turn (into); to serve as; to act as; to work as; to wear (clothes, a facial expression, etc.); to judge as being; to view as being; to think of as; to treat as; to use as; to decide on; to choose; to be sensed (of a smell, noise, etc.); to be (in a state, condition, etc.); to be worth; to cost; to pass (of time); to elapse; verbalizing suffix (applies to nouns noted in this dictionary with the part of speech "vs"); creates a humble verb (after a noun prefixed with "o" or "go"); to be just about to; to be just starting to; to try to; to attempt to
(こと、こん)
thing; matter; incident; occurrence; event; something serious; trouble; crisis; circumstances; situation; state of affairs; work; business; affair; after an inflectable word, creates a noun phrase indicating something the speaker does not feel close to; nominalizing suffix; pretending to ...; playing make-believe ...; alias; aka; nickname; alternative name; also known as
ない (ない)
not; emphatic suffix

Kanji

Readings: ユウ、 とも
Meaning: friend
Readings: ジン、 ニン、 ひと、 -り、 -と
Meaning: person
Readings: セン、 えら.ぶ
Meanings: elect, select, choose, prefer
Readings: チュウ、 そそ.ぐ、 さ.す、 つ.ぐ
Meanings: pour, irrigate, shed (tears), flow into, concentrate on, notes, comment, annotate
Reading: 
Meanings: idea, mind, heart, taste, thought, desire, care, liking