Large, big, and great are all used to talk about size. In general, large is more formal than big, and great is more formal than large. Large and big are normally used to describe objects, but you can also use big to suggest that something is important or impressive. ...his influence over the big advertisers. You normally use great to emphasize the importance of someone or something. ...the great English architect, Inigo Jones. However, you can also use great to suggest that something is impressive because of its size. The great bird of prey was a dark smudge against the sun. You can use large or great, but not big, to describe amounts. ...a large amount of blood on the floor. ...the coming of tourists in great numbers. Both big and great can be used to emphasize the intensity of something, although great is more formal. It gives me great pleasure to welcome you... Most of them act like big fools.

large，big和great均用来谈论大小。一般而言，large比big更为正式，而great又比large更正式。large和big通常用来描述物体，但也可用big来表示某事物重要或令人印象深刻，例如，his influence over the big advertisers（他对大广告客户的影响）。great通常用来强调某人或某事物的重要性：the great English architect, Inigo Jones（英国伟大的建筑师伊尼戈·琼斯）。不过，也可用great来表示某物因为巨大而令人印象深刻：The great bird of prey was a dark smudge against the sun（逆着太阳望去，那只巨大的猛禽只是天空中的一个黑影）。形容数量可用large和great，但不可用big，例如，a large amount of blood on the floor（地板上的一大滩血），the coming of tourists in great numbers（大量游客的到来）。big和great均可用于强调强烈程度，但great更为正式，例如，It gives me great pleasure to welcome you（能欢迎您的到来是我的莫大荣幸），Most of them act like big fools（他们中大多数人都表现得像大傻瓜）。