YOU SAID:
Silly Sally should be silly.
INTO JAPANESE
愚かなサリーは愚かなはずです。
BACK INTO ENGLISH
Stupid Sally should be stupid.
INTO JAPANESE
愚かなサリーは愚かでなければなりません。
BACK INTO ENGLISH
A stupid sari must be stupid.
INTO JAPANESE
愚かなサリーは愚かでなければなりません。
BACK INTO ENGLISH
A stupid sari must be stupid.
That didn't even make that much sense in English.