并列连词易错点：否定句and变or、祈使句+or表否则、either or/neither nor就近原则
引言
并列连词看着简单，却有三处丢分重灾区：否定句里的 and 要变 or、祈使句 + or 表示"否则"、还有 both/and、either/or 等搭配的主谓一致就近原则。
易错点一：否定句 and 变 or
```text
肯定句用 and，否定句用 or
肯定：I like singing and dancing.
否定：I don't like singing or dancing.（or 不是 or 而是"也不"）
✗ I can't sing and dance.
✓ I can't sing or dance. 我不会唱歌也不会跳舞。
```
易错点二：祈使句 + or 表"否则"
```text
祈使句 + or = "……否则……"
祈使句 + and = "……就……"
Hurry up, or you'll be late. 快点，否则你会迟到。
Work hard, and you'll succeed. 努力工作，你就会成功。
```
易错点三：就近原则
```text
either...or 或者……或者……
neither...nor 既不……也不……
not only...but also 不但……而且……
就近原则：谓语动词看离它最近的主语
Either you or he is right. 要么你对，要么他对。（看 he，用 is）
Neither he nor they are wrong. 他和他们都没错。（看 they，用 are）
Not only his parents but also his sister is friendly.
不但他的父母，而且他的姐姐也很友好。（看 sister，用 is）
```
both...and 用复数
```text
both...and 表示"两者都"，看作整体，谓语用复数
Both Tom and Jerry are going to school.
汤姆和杰瑞都要去上学。（用 are）
both...and 不用就近原则，固定复数
```
阅读技巧：but/so 定位重点
```text
but 后是重点：转折后才是作者真正想说的
so 后常是段落主旨：总结性内容
阅读时看到 but 和 so，重点看它们后面的句子
```
实战练习
```text
- I don't like tea ______ coffee. → or（否定句 and 变 or）
- Study hard, ______ you'll pass the exam. → and（就）
- Be careful, ______ you'll make mistakes. → or（否则）
- Neither Tom nor his friends ______ coming. → are（就近，看 friends）
- Both my parents ______ teachers. → are（both...and 用复数）
```
总结
```text
否定句：and 变 or
祈使句：+ and 就；+ or 否则
either or / neither nor / not only but also：就近原则
both and：谓语用复数
but 后重点，so 后主旨
```
```text
今日小抄：
Hurry up, or you'll be late. 快点，否则你会迟到。
Both Tom and Jerry are going to school. 两人都要去上学。
Either you or he is right. 要么你对，要么他对。
```