什么是a large number of？
a large number of是英语中的一个短语，意思是“大量的”或“许多的”。这个短语通常用来描述数量很多的事物，例如：“There are a large number of people waiting in line.”（有许多人在排队等候。）
a large number of的用法
a large number of通常用来修饰可数名词的复数形式，例如people、books、cars等。它也可以用来修饰不可数名词，例如water、money、information等，但此时需要使用不可数名词的量词，例如a large amount of water、a large sum of money等。
此外，a large number of还可以用来修饰动词，例如“There are a large number of people who enjoy hiking.”（有很多人喜欢徒步旅行。）
a large number of和其他类似短语的区别
a large number of和其他类似的短语，例如a great deal of、a lot of、lots of等，都有“大量的”或“许多的”意思。它们之间的区别在于使用场合和语气上。a large number of通常用于正式场合，例如学术论文或商务信函中；而a lot of和lots of则更常用于口语和非正式场合。a great deal of则更多地用于描述抽象的概念，例如“a great deal of stress”（很大的压力）。
a large number of的例句
1. There are a large number of students in the classroom.
2. The company received a large number of job applications.
3. A large number of tourists visit this city every year.
4. The research found that a large number of people suffer from anxiety.
5. The library has a large number of books on history.
6. A large number of people are expected to attend the concert.
7. The company has a large number of loyal customers.
总结
a large number of是英语中一个常用的短语，意思是“大量的”或“许多的”。它可以修饰可数名词的复数形式，也可以修饰不可数名词，并且可以用来修饰动词。与其他类似的短语相比，a large number of更常用于正式场合。