很多家长都遇过这一幕：卷子发回来，孩子指着一道题说「我明明会做啊」。他多半没说谎——会做和拿分是两件事。这一页不讲考纲，只讲一件事：答案该写成什么样子，才拿得到那个分。Most parents know the moment: the paper comes back and the child says "but I knew this one". They are usually telling the truth — knowing it and scoring it are different things. This page is not about the syllabus. It is about one thing: what an answer has to look like to earn the mark.
本页讲的是答题规范与常见失分原因，属于教学经验总结。各科试卷结构与分值请看 PSLE 完全指南；各年级知识点请看 MOE 课纲速查。This page covers answering conventions and common causes of lost marks, drawn from teaching practice. For paper structure and weightings see the PSLE guide; for topics by level see the MOE syllabus summary.
"会做却丢分"，到底丢在哪Where those marks actually go
丢分几乎都落在这四类里，没有一类是"不会"：Lost marks nearly always fall into four buckets, and none of them is "didn't know it":
- 答了，但没答到点上——意思对，关键词没出现。Answered, but not to the point — right idea, required word missing.
- 对了，但没写过程——答案正确，步骤分丢光。Correct, but no working — right answer, method marks gone.
- 写了，但格式不对——内容没问题，格式分扣掉。Written, but wrong format — content fine, format marks deducted.
- 会了，但看错题——问"多多少"答成"一共多少"。Knew it, misread it — asked "how many more", answered "how many altogether".
这四类的共同点是：再多做题也补不上。它们要靠改习惯，而不是靠刷量。What they share: more practice papers will not fix them. They are habits, not knowledge.
科学：关键词与完整的因果链Science: keywords and a complete causal chain
科学的开放题几乎都按关键词给分。孩子写「因为天气热，所以水不见了」，老师知道他懂，但"蒸发（evaporation）"这个词没出现，分就拿不满。Open-ended science answers are marked largely on keywords. "Because it was hot, the water disappeared" tells the teacher the child understands — but without "evaporation" the mark is not there.
更常见的是因果链断了一环。科学答案通常要说完三段：More common still is a missing link in the chain. A science answer usually needs three parts:
| 要素Element | 例子Example |
|---|---|
| ① 条件／原因① Condition / cause | 杯子放在阳光下，水吸收了热量……The cup was in the sun, so the water gained heat… |
| ② 过程（写出术语）② Process (name it) | ……水蒸发（evaporation）变成水蒸气………the water evaporated into water vapour… |
| ③ 结果（回到题目问的）③ Result (answer the question asked) | ……所以杯里的水变少了。…so there was less water in the cup. |
💡 一个好用的自检：读一遍自己的答案，数数有没有说到「因为…所以…」的完整两头。只写结果不写原因，是科学最典型的丢分方式。💡 A useful self-check: read your answer back and see whether both ends of "because… therefore…" are there. Stating the result without the cause is the classic science loss.
另外两个高频问题：题目问"为什么"却答成"是什么"；以及实验题没指出"哪个是变量、哪些保持不变"。Two other frequent issues: answering "what" when asked "why", and not identifying the variable changed and the variables kept the same in experiment questions.
数学：过程、单位、作答句Maths: working, units and a final statement
- 过程分是白送的，别自己放弃。心算写个答案，万一算错就是零分；写了式子，就算最后一步错，前面的步骤分还在。Method marks are free — don't refuse them. A bare answer that is wrong scores nothing; shown working keeps the earlier marks even if the last step slips.
- 单位。答案是 12，但题目问的是多少元、多少厘米——漏了单位是最不值的失分。Units. The answer is 12 — but twelve dollars? centimetres? A missing unit is the cheapest mark to lose.
- 作答句。应用题算完要用一句话回答问题本身，而不是留一个光秃秃的数字。A closing statement. Word problems end with a sentence answering the question, not a naked number.
- 看清问的是谁。「哥哥比弟弟多多少」答成弟弟的钱，是最常见的读题错误——把问题里的关键词圈出来就能少一半。Check who is being asked about. "How much more does the brother have" answered with the younger one's amount is the classic misread — circling the key words halves it.
- 画图。应用题先画模型图，读题错误会大幅下降（见 Bar Model 家长指南）。Draw. A bar model before calculating cuts misreadings sharply (see the bar model guide).
英文：格式与"写给谁看"English: format and audience
英文写作（尤其是情境写作 situational writing）丢分最集中的地方不是语法，是格式和语气：In English writing — situational writing especially — the marks go not on grammar but on format and register:
- 先问三件事：写给谁？为了什么？该客气还是可以随意？写给校长和写给同学，用词完全不同。Ask three things first: who is it for, what is it for, formal or friendly? A note to the principal and a note to a friend share no vocabulary.
- 题目给的要点必须全部覆盖。漏一个要点就是实打实的扣分，写得再漂亮也补不回来。Cover every bullet given. A missed point is a certain deduction that fine writing cannot recover.
- 格式该有的别省：称呼、结尾、署名——按题目要求的文体来。Keep the format furniture: greeting, sign-off, name — as the text type requires.
- 时态前后一致。叙述过去的事就一路用过去式，中途跳时态是最常被圈红的地方。Keep tense consistent. Narrating the past means past throughout; switching mid-way is the most-circled error.
- 理解题要回到原文找依据，别凭印象答；问"为什么"就要答出原因，不是复述情节。Comprehension answers must point back to the text, not to memory; "why" needs a reason, not a retelling.
华文：病句、标点、加点字Chinese: sentence errors, punctuation, marked characters
- 病句的类型是有限的。成分残缺、搭配不当、语序颠倒、重复啰嗦、前后矛盾——按类型认，比一句句凭语感判断可靠得多。Sentence errors come in a finite set — missing elements, mismatched collocations, wrong order, redundancy, self-contradiction. Recognising the type beats judging by ear.
- 标点是实分。逗号一路到底、该用冒号引号的对话不加，都会扣；对话记得另起一行。Punctuation carries real marks. A run of commas, or dialogue without colon and quotation marks, costs; start a new line for speech.
- 加点字看清楚考的是哪个字。题目在某个字下面标了点，问的就是那个字的读音或意思——先把那个字圈出来再答。Check which character is marked. Dots under a character mean that character's reading or meaning is what is being asked — circle it before answering.
- 阅读理解要答完整句。只抄原文一个词组，往往拿不满分；用完整的句子把问题重述一遍再回答。Answer comprehension in full sentences. Lifting a phrase rarely scores full marks; restate the question in your answer.
- 同音别字。「的地得」「在再」「作做」是高频三对，靠句子记，不靠抄（见 听写陪练指南）。Homophone confusions. 的/地/得, 在/再, 作/做 are the frequent three — fixed by sentences, not copying (see the tingxie guide).
交卷前的四条检查Four checks before handing in
教孩子固定做这四条，比任何技巧都实用。四条加起来不超过三分钟。Four fixed checks beat any technique. All four take under three minutes.
- 有没有空题？不会也要写——写错不扣额外的分，空着一定是零。Anything blank? Write something — a wrong answer costs no extra, a blank is certainly zero.
- 问的是什么？回头再读一遍题目最后那句问句，对一对自己答的是不是它。What was asked? Re-read the final question sentence and check that is what you answered.
- 单位、标点、格式补齐了吗？数学看单位，华文英文看标点和格式。Units, punctuation, format all present? Units for maths; punctuation and format for languages.
- 过程留下了吗？算式、关键词、依据句——让改卷的人看得见你的思路。Is the working visible? Equations, keywords, textual evidence — let the marker see your thinking.
这些习惯要靠平时练，不是考前叮嘱一句就能长出来。StarLearn 每道题的解析都会指出失分点在哪、答案该写成什么样，做错的题自动进错题本、连续答对两次才移出。免费试用 20 次，不需要绑卡。These are habits built in ordinary practice, not reminders given the night before. StarLearn's explanations name where the mark is lost and what the answer should look like; missed questions go to the mistake book and only leave after two correct attempts. 20 free tries, no card required.