不定代词作主语
someone / anyone / nothing 之类一律用单数谓语。
Someone is…／Everything is…
要点
- someone、anyone、everyone、nobody 作主语，谓语用单数。
- something、anything、nothing、everything 作主语，谓语用单数。
- all 作主语要看指代：指人用复数，指物用单数。
- none 作主语时单复都可以，正式语体常用单数。
- 不定代词后面再挂 in our class ／ in the room 这类修饰语，中心词仍是那个代词，谓语照旧单数：Everyone in our class is for the plan. —— "后面那块不算主语"的细则在「with ／ as well as 等修饰语下的主谓一致」。
- no 后面跟的是名词，谓语跟着那个名词的数：No student is allowed in the lab alone. ／ No students are allowed… —— 换成 nobody ／ no one 就只能用单数，那十二个词的规矩见「复合不定代词」。
- everyone ／ somebody 作主语谓语按单数，可英语回头指代它们时常用 they ／ their：Everyone was in their seat. —— 口语与书面都收这种写法，作文里要更正式就把主语整个改成复数。
例句
Everyone was very happy.
每个人都很开心。
Everything will be free.
一切都将是免费的。
Climate change affects everyone.
气候变化影响每个人。
There was nothing to do.
没什么可做的。
Nobody in our group has been to Hainan.
我们组里没人去过海南。
Each of the pictures has a short note under it.
每张照片下面都有一行短说明。
易错提示
- everyone 与 every one 不同：every one 后面可以接 of。
- 这些词作主语时，谓语永远用单数。
- every one 与 everyone 写法不同，谓语却都按单数：Every one of the rooms is locked.（of 后面那个复数 rooms 不参与）
- 反意疑问里指人的一族后面常用 they：Everyone is here, aren't they? —— 谓语照旧按单数走，只有代词换成 they；指物的那一头（nothing…is it）在「复合不定代词」里。