Grammar of すぐ医者に連れていこう


I'm learning japanese on my own and face a sentence below.

この子、熱が高くてすごくつらそうだよ。 "すぐ医者に連れていこう。"

What i don't understand is the grammar in the last sentence. It seems that the
book uses a Ving format. it's strange for me as i believe that "すぐ医者に連れこう"
should also works here.

Can anyone explain why the book uses this sentence structure？ is the one i
modified above still correct?




連れていこう is the volitional form of 連れていく. 連れていく means "to take (someone)(to
somewhere)", and is made of the te-form of the verb 連れる ("accompany") + a
subsidiary verb いく(行く) ("go").

> 「すぐ医者に連れていこう。」  
>  "Let's take him/her to a doctor at once."

(連れこう is not a correct conjugation.)




連れていこう is the volitional form of 連れていく. 連れていく means "to take (someone)(to
somewhere)", and is made of the te-form of the verb 連れる ("accompany") + a
subsidiary verb いく(行く) ("go").

> 「すぐ医者に連れていこう。」  
>  "Let's take him/her to a doctor at once."

(連れこう is not a correct conjugation.)

