YOU SAID:
modern world history is the most boring class in the world
INTO JAPANESE
現代世界史は世界で最も退屈な授業です
BACK INTO ENGLISH
Modern world history is the most boring class in the world
INTO JAPANESE
現代世界史は世界で最も退屈な授業だ
BACK INTO ENGLISH
Modern world history is the most boring class in the world
You've done this before, haven't you.