YOU SAID:

i have to make a speech about myself by thursday

INTO JAPANESE

私は木曜日までに自分についてスピーチをしなければなりません

BACK INTO ENGLISH

I have to give a speech about myself by Thursday

INTO JAPANESE

私は木曜日までに自分自身についてスピーチをしなければなりません

BACK INTO ENGLISH

I have to give a speech about myself by Thursday