听众王司宇想知道 “a lot of、plenty of、amount、number” 和 “quantity” 的用法区别。这五个搭配和词汇都能用来限定事物的数量。它们当中有的只能修饰可数名词，有的只能修饰不可数名词。除了在修饰名词上的区别外，在使用中，它们的用法还有哪些区别？

Apparently, Meg's cooking leaves a lot to be desired. 显然，梅格的厨艺还有很大的改进余地。 The film has a very interesting premise and a story that has quite a bit of potential, but the final product leaves a lot to be ...

And “that’s saying a lot” - that shows how important the Internet is. As is explained later, the Web has billions of users. If a fact “says” something about someone or something, it means to emphasize ...

The teacher covered a lot of ground in her class. She is a brilliant teacher. 这个老师在课上讲的知识点涉及面很广。 她是一位出色的教师。 We need to study hard and cover a lot of ground. Our test is on Monday! 我们必须刻苦复习，涵盖方方面面。