掌握一致规律，让句子更精准、更高级
🧩 一、从“形式一致”到“意义一致”
初级阶段我们常背规则：He plays / They play.
但在更复杂的语境中，**逻辑一致（notional agreement）**才是关键。
例句对比：
✅ A number of people are waiting outside.
✅ The number of people is growing rapidly.
👉 前者“people”是逻辑主语（复数），后者“number”是主语（单数）。
⚖️ 二、并列结构下的一致关系
and 通常连接复数主语：
✅ Tom and Lily work together on the project.
但当并列项构成一个整体或概念时，谓语用单数：
✅ Fish and chips is my favorite meal.
而 or / nor 连接的主语，要看靠近谓语的那个名词。
✅ Neither the teacher nor the students know the reason.
✅ Neither the students nor the teacher knows the reason.
💬 三、从句主语的单数判断
当主语是一个从句时，通常视为一个整体概念，谓语用单数。
✅ What you said makes sense.
✅ How they react depends on the situation.
这类结构在学术写作中极为常见，尤其在表达因果或条件时。
🧮 四、集合名词与数量表达
集合名词（team, family, government）可作单数或复数用：
✅ The team is training for the match.（整体）
✅ The team are arguing with each other.（个体）
数量表达同样如此：
✅ Five miles is a long walk.
✅ Forty percent of the students are international.
🚫 五、考试高频易错点
❌ None of them are ready.
✅ None of them is ready.（在正式写作中“none”常作单数）
❌ Each of the boys have a pen.
✅ Each of the boys has a pen.
小测试👇
1️⃣ The government have / has announced new policies.
2️⃣ Neither my friends nor I am / are free tonight.
（答案：1️⃣ 皆可，根据语境；2️⃣ am ✅）
🧠 六、写作延伸：让语法逻辑更自然
高分作文往往语法无误，但逻辑细腻。
示例：
❌ The effects of pollution is serious.
✅ The effects of pollution are serious.
👉 关键在于理解“effects”为复数逻辑主语。
掌握逻辑一致，不仅能让语法正确，更能让句子“自然地符合母语者思维”。
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