YOU SAID:

i need to go number 2

INTO JAPANESE

私は2番に行く必要があります

BACK INTO ENGLISH

I need to go to number 2

INTO JAPANESE

2番に行く必要があります

BACK INTO ENGLISH

Must go to number 2

INTO JAPANESE

2番に行かなければなりません

BACK INTO ENGLISH

I have to go to number 2

INTO JAPANESE

私は2番に行かなければなりません

BACK INTO ENGLISH

I have to go to number 2