Singular Nouns: One Person or Thing
先写下记得的内容，再查看解释。不要填写个人信息。
查看解释
A singular noun refers to exactly one person, place, object, or concept. Unlike plural nouns, which often add an s or es at the end, regular singular nouns stay in their base form. Recognizing a singular noun allows you to select matching words such as this instead of these, and verbs like is instead of are.
A client left a briefcase on the reception counter.