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a great deal of修饰不可数名词，意为“许多的”，谓语动词用单数。如：A great deal of work awaits us.大量的工作等着我们去做。
a great deal of
基本字义
a great deal of
英[ə ɡreɪt diːl ɒv] 美[ə ɡreɪt diːl əv]
许多
双语例句
1.I also had friends who gave me a great deal of encouragement.
我还有些朋友给了我很多鼓励。
2.The police gained a great deal of useful information about the organization.
警方收集到了大量关于该组织的有用信息。
3.All of these people gave me a great deal of information I had never heard of.
这些人都给了我许多闻所未闻的知识。
a great deal of与a great deal的区别
区别在于用法上的不同。
1、a great deal of后面要接名词，不可单独使用，且a great deal of只能修饰不可数名词。
例句：
①No one is worth a great deal of sacrifice.
没有谁值得付出重大的牺牲。
②Running a kitchen involves a great deal of discipline and speed.
料理好厨房需要把一切都安排得规规矩矩，且要讲求速度。
2、a great deal可以不加名词，这个时候它就被用作副词了。
例句：
①Exercising the body does a great deal to improve one's health.
锻炼身体对增进健康大有益处。
②Your contribution means a great deal not only to this organization, but also to the whole world.
你们的贡献意义重大，不仅是对于这个协会，而且对于整个世界。
既可以+不可数名词，又可以+可数名词的复数的短语
1、a lot of
2、plenty of (前不加a)
3、a large quantity of加不可数名词,单数谓语
4、quantities of 加不可数名词,复数谓语