发布时间:2026-04-24
ACT英语部分对语法规则的考查非常细致,标点符号的使用更是高频考点。很多同学明明知道语法规则,做题时却总在标点上栽跟头。今天我们就来梳理ACT语法中比较容易出错的标点问题,帮你避开这些坑。
一、逗号使用三大陷阱
1. 并列连词前的逗号
当两个完整句子用并列连词(and/but/or等)连接时,连词前必须加逗号。
错误示例:I went to the store and I bought some milk.
正确写法:I went to the store, and I bought some milk.
2. 非限制性从句的逗号
非限制性从句(补充说明作用)必须用逗号隔开,限制性从句(定义作用)不加逗号。
对比示例:
My brother, who lives in Boston, is a doctor.(非限制性)
The book that you lent me was interesting.(限制性)
3. 插入语的逗号遗漏
however/therefore等副词作插入语时,前后都要加逗号。
错误示例:I wanted to go however it was too late.
正确写法:I wanted to go, however, it was too late.
二、分号常见错误
分号只能连接两个语法完整的句子,且不能与并列连词(and/but等)同时使用。
错误示例:Although it was raining; we went hiking.
正确用法:It was raining; we still went hiking.
三、冒号使用要点
冒号后接完整句子、列表或解释说明时,冒号前必须是完整句子。
错误示例:The ingredients are: flour, eggs, and milk.
正确写法:The recipe requires three ingredients: flour, eggs, and milk.
四、破折号与括号的区别
破折号强调内容,括号弱化内容。ACT考试中通常优先用破折号。
示例:
The answer—though surprising—was correct.(强调)
The answer (see page 5) is explained later.(弱化)
以上就是ACT语法中比较容易出错的标点问题。标点虽小,但直接影响句子结构和逻辑关系。如果想系统学习ACT语法考点,可以联系我们获取更多备考资料。
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