君たち学生は勤勉でなくてはならない。

君たち学生は勤勉でなくてはならない。

You students are supposed to be diligent.

君(きみ)たち学生(がくせい)は勤勉(きんべん)でなくてはならない。

Kimitachi gakusei wa kinben denakute wanaranai.

君達 (きみたち)

(used colloquially by young females) you (plural); all of you; you all

学生 (がくせい)

student (esp. a university student)

は (は)

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

勤勉 (きんべん)

diligent; industrious

だ (だ)

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

ば (ば)

if ... then; when; and; why don't you...?; the more (one does something); because; since

Readings: クン、きみ、 -ぎみ

Meanings: mister, you, ruler, male name suffix

Readings: ガク、まな.ぶ

Meanings: study, learning, science

Readings: セイ、ショウ、い.きる、い.かす、い.ける、う.まれる、うま.れる、う.まれ、うまれ、う.む、お.う、は.える、は.やす、き、なま、なま-、な.る、な.す、む.す、 -う

Meanings: life, genuine, birth

Readings: キン、ゴン、つと.める、 -づと.め、つと.まる、いそ.しむ

Meanings: diligence, become employed, serve

Readings: ベン、つと.める

Meanings: exertion, endeavour, encourage, strive, make effort, diligent