laptop is singular

In a way, "this general office laptop" is referring to a collection of thousands of laptops, all the same kind. But in another way it is referring to "This _kind_." This one kind of laptop is basic and dependable. Either way, the subject of the sentence is "this laptop," and grammatically it is singular, so we use "is." These two sentences are both correct and mean the same thing. "The Dell Inspiron 15 is a good laptop." "Dell Inspiron 15s are good laptops."

Hello Yeni, Just a quick note on subject-verb agreement: the verb should match the subject of the sentence. In this case, the subject is "This general office laptop," so the correct verb form would be "is" instead of "are." If the subject were "These general office laptops," then "are" would be appropriate. If this explanation doesn't address your confusion, please let me know so we can tackle the issue together more effectively. Hope this clears things up :))