莫大的信心英语怎么说

"莫大的信心" 可以用 "tremendous confidence" 来表达。
"Tremendous" 是形容词，意思是 "极大的，巨大的"，常用来形容某些东西的程度或数量。例如：
He had a tremendous amount of energy. 他有极大的精力。
The company has made tremendous progress in the past year. 这家公司在过去一年中取得了巨大的进步。
"Confidence" 是名词，意思是 "信心，信任"。例如：
She has a lot of confidence in her abilities. 她对自己的能力有很大的信心。
His calm demeanor gave me confidence in his ability to handle the situation. 他冷静的态度让我对他处理这种情况的能力有信心。