The following sentence is written by my student.
Haze also caused great inconvenience to residents' work and life.
Do you think it is necessary to use the plural form of "inconvenience", namely, "inconveniences"?
There is little need to use the plural. For example, a lot of inconvenience can refer to inconvenience in more than one form.
i would express the idea of plural here by great inconvenience in many/several ways, if I thought it mattered in the circumstances.