YOU SAID:
Be careful he is a big
INTO JAPANESE
彼は大きいです注意してください
BACK INTO ENGLISH
Be careful he is big
INTO JAPANESE
彼は大きいので注意してください
BACK INTO ENGLISH
Please be careful because he is big
INTO JAPANESE
彼は大きいので注意してください
BACK INTO ENGLISH
Please be careful because he is big
You should move to Japan!