英语语法错误修改建议：如何让你的句子更清晰流畅

你这段话的语法没有明显错误，但有一些可以改进的地方。以下是一些建议：

'Another problem is the campus larger and the number of students increases, this leads me feel helpless and lonely in the crowd, especially when there are no friends around.'

可以改为：

'Another problem is that as the campus grows larger and the number of students increases, I feel helpless and lonely in the crowd, especially when I don't have any friends around.'

在这个改进后的句子中，修复了一些语法问题，使句子更加清晰和流畅。