Questions about the singular and plural of English words, The first question: it's about words with the same singular and plural, such as works factory, and species. In other words, it can be written as follows: a works / many works a factory / many factories a species / many species a species / many species Second question: a pair of pants are green / a pair of pants is green, which one is right? Are panels identical? Since boot is identical, why is there a pair of boots I've forgotten the singular and plural

Questions about the singular and plural of English words, The first question: it's about words with the same singular and plural, such as works factory, and species. In other words, it can be written as follows: a works / many works a factory / many factories a species / many species a species / many species Second question: a pair of pants are green / a pair of pants is green, which one is right? Are panels identical? Since boot is identical, why is there a pair of boots I've forgotten the singular and plural

First, LZ is right
Second, we should use a pair of pants is green
Pants is not the same as simple and complex numbers, but pants are in the plural form. Because there are two legs. Boot is the same, and shoe is the same, usually in the plural form
I hope I can help you