そんなに早く歩いたら、追い付いて行けませんよ。

I can't keep up with you if you walk so fast.

そんなに早(はや)く歩(ある)いたら、追(おつ)い付()いて行(い)けませんよ。

Sonnani hayaku aruitara, oitsuite ikemasen yo.

そんなに (そんなに)

so much; so; like that

早い (はやい)

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

歩く (あるく)

to walk

追いつく (おいつく)

to overtake; to catch up (with)

行ける (いける、イケる)

to be good (at); to go well; to look (taste, etc.) good

よ (よ)

indicates certainty, emphasis, contempt, request, etc.; used when calling out to someone; used to catch one's breath or get someone's attention; yo!

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: ホ、ブ、フ、ある.く、あゆ.む

Meanings: walk, counter for steps

Readings: ツイ、お.う

Meanings: chase, drive away, follow, pursue, meanwhile

Readings: フ、つ.ける、 -つ.ける、 -づ.ける、つ.け、つ.け-、 -つ.け、 -づ.け、 -づけ、つ.く、 -づ.く、つ.き、 -つ.き、 -つき、 -づ.き、 -づき

Meanings: adhere, attach, refer to, append

Readings: コウ、ギョウ、アン、い.く、ゆ.く、 -ゆ.き、 -ゆき、 -い.き、 -いき、おこな.う、おこ.なう

Meanings: going, journey, carry out, conduct, act, line, row, bank