YOU SAID:
tomorrow i have very boring clases at university
INTO JAPANESE
明日は大学でとても退屈な授業があります
BACK INTO ENGLISH
I have a very boring class at university tomorrow.
INTO JAPANESE
明日、大学でとても退屈な授業があります。
BACK INTO ENGLISH
I have a very boring class at university tomorrow.
You've done this before, haven't you.