君はもう少し早く起きなければなりません。

You must get up a little earlier.

君(きみ)はもう少(すこ)し早(はや)く起(お)きなければなりません。

Kimi wa mōsukoshi hayaku okinakerebanarimasen.

君 (きみ)

you; buddy; pal; monarch; ruler; sovereign; (one's) master

は (は)

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

もう少し (もうすこし)

a bit more; a bit longer

早い (はやい)

fast; quick; hasty; brisk; early (in the day, etc.); premature; (too) soon; not yet; (too) early; easy; simple; quick

起きる (おきる)

to get up; to rise; to blaze up (fire); to wake up; to be awake; to stay awake; to occur (usu. of unfavourable incidents); to happen; to take place

Readings: クン、きみ、 -ぎみ

Meanings: mister, you, ruler, male name suffix

Readings: ショウ、すく.ない、すこ.し

Meanings: few, little

Readings: ソウ、サッ、はや.い、はや、はや-、はや.まる、はや.める、さ-

Meanings: early, fast

Readings: キ、お.きる、お.こる、お.こす、おこ.す、た.つ

Meanings: rouse, wake up, get up