YOU SAID:
How may I compare thee to a summers day.
INTO JAPANESE
あなたを夏の日に比べたらどうだろう。
BACK INTO ENGLISH
What if I compare you to a summer day?
INTO JAPANESE
あなたを夏の日に例えたら?
BACK INTO ENGLISH
What if you were a summer day?
INTO JAPANESE
あなたが夏の日だったら?
BACK INTO ENGLISH
What if you were a summer day?
That didn't even make that much sense in English.