YOU SAID:
Today is going to be a wonderful day.
INTO JAPANESE
今日は素晴らしい日になるつもりです。
BACK INTO ENGLISH
It is going to become a great day today.
INTO JAPANESE
今日は素晴らしい日になることです。
BACK INTO ENGLISH
Is to become a great day today.
INTO JAPANESE
今日は素晴らしい日になることです。
BACK INTO ENGLISH
Is to become a great day today.
That didn't even make that much sense in English.