SPM英语语法：修正句子碎片和连写句

为什么这两种错误最影响分数

教了8年SPM英语，改了无数篇学生作文，我可以告诉你：句子碎片（sentence fragments）和连写句（run-on sentences）是最快拉低作文等级的两种语法错误。不是拼写错误，不是时态错误。是碎片和连写句。

为什么？因为它们破坏了英语写作的基本单位——句子。考官读满是碎片的作文，没法跟上你的思路。考官读满是连写句的作文，在一团混乱的从句中迷失方向。两种情况的结果一样：你的作文得分比你的想法应得的低。

好消息是这两种错误都有规律可循，一旦学会发现它们，修正起来并不难。

什么是句子碎片？

句子碎片是一个不完整的句子，却被当成完整句子来写。它缺少某个关键部分——通常是主语、主要动词，或者是一个单独存在的从句。

类型1：缺少主语

碎片： Went to the library after school.

谁去了图书馆？没有主语。这是马来西亚学生写快时的常见错误。

修正： She went to the library after school.

类型2：缺少主要动词

碎片： The students in the classroom very noisy.

有主语（“the students”）但没有主要动词。在中文里你可以说”教室里的学生很吵”，不需要明确的”是”。但英语不行。

修正： The students in the classroom were very noisy.

这是马来西亚学生最常犯的错误之一，因为中文和马来文都不总是需要显式的be动词。如果你发现自己写了一个没有动词的句子，加上正确形式的”is/are/was/were”。

类型3：从句单独存在

碎片： Because she studied every night.

这有主语（“she”）和动词（“studied”），看起来完整。但”because”让它变成了从句——它不能独立存在，需要一个主句来完成意思。

修正： She scored an A because she studied every night.

需要注意的从句引导词：because, although, when, while, if, since, after, before, unless, until, even though。

如果你的句子以这些词开头，检查它有没有连接到主句。

什么是连写句？

连写句是相反的问题：两个或更多完整句子之间没有正确的标点或连接词。

类型1：逗号拼接（Comma Splice）

连写句： She studied hard for the exam, she scored an A.

这是两个完整句子只用逗号连接。仅靠一个逗号不能连接两个独立从句。这在SPM作文中极其常见。

修正方法：

类型2：粘连句（Fused Sentence）

连写句： She studied hard for the exam she scored an A.

两个完整句子之间完全没有标点。读者必须自己猜哪里是一个想法结束、另一个开始。

修正： She studied hard for the exam. She scored an A.

如何在自己的作文中发现这些错误

大多数学生看不出自己作文中的碎片和连写句，因为你知道自己想表达什么。以下三个技巧有帮助：

朗读测试

大声慢慢朗读你的作文。每个句号处完全停顿。如果停下来时一个句子听起来不完整——好像还需要什么——它可能是碎片。如果你在到达句号前就喘不过气，它可能是连写句。

主语-动词检查

逐句检查，圈出主语，划出主要动词。如果找不到两者，你就有碎片。这个方法系统可靠——推荐给在句子结构方面有困难的学生。

连词测试

如果一个句子有两组”主语+动词”，但之间没有连词（and, but, so, or, yet）或正确标点（分号、句号），它就是连写句。

修改前后对比：真实学生作文示例

示例1：记叙文

修改前（碎片）： I woke up early that morning. Feeling nervous about the exam. My mother prepared breakfast. Which I could hardly eat. Because my stomach was churning.

修改后： I woke up early that morning, feeling nervous about the exam. My mother prepared breakfast, which I could hardly eat because my stomach was churning.

注意那些碎片（“Feeling nervous about the exam,” “Which I could hardly eat,” “Because my stomach was churning”）都是需要连接到主句的从属成分。

示例2：议论文

修改前（连写句）： Social media has many benefits, it connects people across the world, students can use it for education, however some people become addicted to it they spend too many hours scrolling.

修改后： Social media has many benefits. It connects people across the world, and students can use it for education. However, some people become addicted to it. They spend too many hours scrolling.

原文是一个长连写句，有逗号拼接和粘连句。分成正确的句子后，每个观点都清晰明确。

示例3：混合错误

修改前： Although the government has implemented many programs. The pollution problem still serious, many factories continue to release waste into rivers they do not follow the regulations.

修改后： Although the government has implemented many programs, the pollution problem is still serious. Many factories continue to release waste into rivers because they do not follow the regulations.

三个错误被修正：碎片（“Although the government…”），缺失动词（“still serious”改为”is still serious”），粘连句（factories + they）。

快速修正策略

练习

阅读以下段落，找出碎片和连写句，然后重写正确版本：

Education is important for young people. Because it opens doors to opportunities. Students should study hard, they should also participate in co-curricular activities these activities teach teamwork. Although some students find it difficult to balance both. With proper time management, they can succeed.

正确版本：

Education is important for young people because it opens doors to opportunities. Students should study hard, and they should also participate in co-curricular activities. These activities teach teamwork. Although some students find it difficult to balance both, with proper 时间管理 they can succeed.

养成习惯

修正碎片和连写句不是靠背规则，而是养成检查每个句子的习惯。写完作文初稿后，回头对每个句子做主语-动词检查。几周之内，你会开始自动发现这些错误。

想了解更多关于写出强句子的技巧，阅读我们关于复杂句结构和过渡词的指南。

如果语法错误拉低了你的作文分数，你想要有针对性的练习，通过WhatsApp联系我们。我们找出你具体的错误模式，给你针对性练习——大多数学生在前3个月就能看到作文分数提升。