明天将是

tomorrow will be

→ 明天
phrase Rare #28,937
tomorrow will be Used to introduce a prediction or description of what tomorrow will be like. 将 is a formal way to express future time.
CH: 我相信明天将是美好的一天。
EN: I believe tomorrow will be a wonderful day.

明天将是好日子

Tomorrow will be a good day.

— 安德烈·卢布廖夫 (1966)

但是亲爱的明天将是崭新的一天

But darling, tomorrow will be a brand-new day.

— 女王旅途 (2014)

明天将是美好的一天

Tomorrow will be a beautiful day.

— 烈日灼人 (1994)