📚 Year 12 Edexcel Spanish: Formula & Theorem Quick Reference Handbook | 12年级 Edexcel 西班牙语：公式定理速查手册
In the study of Spanish at Year 12 for Edexcel, mastering the structural ‘formulas’ of the language unlocks fluency and accuracy. This handbook distils the essential grammar patterns, verb conjugation rules, and sentence-building ‘theorems’ you need to produce correct and sophisticated Spanish in both written and spoken tasks. Each section presents a key rule as a formula-like pattern, followed by a clear explanation and examples, with English and Chinese annotations side by side.
在 12 年级 Edexcel 西班牙语学习中，掌握语言的“公式”可以大幅提升流利度与准确性。本手册提炼了必学的语法结构、动词变位规则和造句“定理”，涵盖书写与口语任务中所需的关键模式。每个小节先用公式化模式呈现要点，再配合清晰的解释与示例，中英文并列说明。
1. Present Indicative Regular Conjugation | 陈述式现在时规则变位
For -ar verbs: STEM + -o, -as, -a, -amos, -áis, -an. For -er verbs: STEM + -o, -es, -e, -emos, -éis, -en. For -ir verbs: STEM + -o, -es, -e, -imos, -ís, -en. The present indicative is the foundational tense used to describe habitual actions, current states, and universal truths.
-ar 动词：词干 + -o, -as, -a, -amos, -áis, -an。-er 动词：词干 + -o, -es, -e, -emos, -éis, -en。-ir 动词：词干 + -o, -es, -e, -imos, -ís, -en。陈述式现在时是最基础的时态，用于描述习惯动作、当前状态和普遍事实。
Example: hablo, hablas, habla, hablamos, habláis, hablan; como, comes, come, comemos, coméis, comen; vivo, vives, vive, vivimos, vivís, viven.
示例：我说、你说、他/她说、我们说、你们说、他们说；我吃、你吃、他/她吃、我们吃、你们吃、他们吃；我住、你住、他/她住、我们住、你们住、他们住。
2. Stem-Changing Verbs (Present) | 词根元音变化（现在时）
Many verbs undergo a vowel change in the stem when stressed. The formula: e → ie, o → ue, e → i (only -ir). The change occurs in all singular forms and the third person plural, but not in nosotros/vosotros. Common examples: querer (e→ie), poder (o→ue), pedir (e→i).
许多动词在词干重读时发生元音变化。公式为：e → ie，o → ue，e → i（仅限 -ir 动词）。变化发生在所有单数人称和第三人称复数，而 nosotros/vosotros 不变。常见例子：querer (e→ie)，poder (o→ue)，pedir (e→i)。
Example: quiero, quieres, quiere, queremos, queréis, quieren. puedo, puedes, puede, podemos, podéis, pueden. pido, pides, pide, pedimos, pedís, piden.
示例：我想要、你想要、他/她想要、我们想要、你们想要、他们想要。我可以、你可以、他/她可以、我们可以、你们可以、他们可以。我请求、你请求、他/她请求、我们请求、你们请求、他们请求。
3. Ser vs Estar – The ‘Two Be’s’ Theorem | Ser 与 Estar 的“双是”定理
Ser is used for permanent characteristics, identity, origin, time, and impersonal expressions. Estar is used for temporary states, location, and the progressive form. The separation formula: ser = essence, estar = condition. Exceptions exist for event location (ser) and some adjectives that change meaning (ser listo = clever; estar listo = ready).
Ser 用于永久特征、身份、来源、时间和无人称表达。Estar 用于临时状态、位置和进行式。分离公式：ser = 本质，estar = 状况。例外包括事件发生的场所用 ser，以及某些形容词含义变化（ser listo 聪明；estar listo 准备好）。
Example: Él es médico. (He is a doctor – profession, permanent.) Está cansado. (He is tired – state, temporary.) La fiesta es en el parque. (The party is in the park – event location.)
示例：他是医生（职业，永久）。他累了（状态，暂时）。派对在公园举行（事件地点）。
4. Preterite vs Imperfect – The Past Pair Formula | 简单过去时与过去未完成时对比公式
The preterite (pretérito) is used for completed actions, with a clear start or end, and for actions that interrupt an ongoing event. The imperfect (imperfecto) is used for habitual or repeated past actions, descriptions, ongoing background, and time/age. The formula: preterite = snapshot; imperfect = video. Signal words like ‘ayer’ (preterite) and ‘siempre’ (imperfect) help.
简单过去时用于已完成的动作，有明确的起始或结束，或打断正在进行的事件。过去未完成时用于过去的习惯或重复动作、描述、进行中的背景，以及时间/年龄。公式：简单过去时 = 快照；过去未完成时 = 视频。标志词如 ‘ayer’（简单过去时）和 ‘siempre’（过去未完成时）可帮助判断。
Example: Ayer comí paella. (Yesterday I ate paella – completed action.) Cuando era niño, jugaba en el parque. (When I was a child, I used to play in the park – habitual.)
示例：昨天我吃了海鲜饭（已完成动作）。我小的时候常在公园玩耍（习惯）。
5. Present Perfect Formula | 现在完成时公式
haber (present) + past participle. The past participle for -ar verbs: -ado; for -er/-ir: -ido. Irregular participles include: ver → visto, escribir → escrito, hacer → hecho, decir → dicho. Used for past actions with present relevance or without a specific time marker.
haber（现在时）+ 过去分词。过去分词：-ar 动词变 -ado；-er/-ir 动词变 -ido。不规则分词如：ver → visto, escribir → escrito, hacer → hecho, decir → dicho。用于与现在有关的过去动作，或未指明具体时间。
Example: He hablado con él. (I have spoken with him.) Hemos escrito una carta. (We have written a letter.)
示例：我已经和他谈过了。我们写了一封信。
6. Present Subjunctive Trigger Formula | 现在时虚拟式触发公式
Form: Take the yo form of present indicative, drop the -o, add opposite vowel endings: -ar verbs use -e, -es, -e, -emos, -éis, -en; -er/-ir verbs use -a, -as, -a, -amos, -áis, -an. Triggers: WEIRDO (Wishes, Emotions, Impersonal expressions, Recommendations, Doubt/Denial, Ojalá). Used after ‘que’ in dependent clauses.
构成：取陈述式现在时 yo 形，去掉 -o，加上相反的元音词尾：-ar 动词用 -e, -es, -e, -emos, -éis, -en；-er/-ir 动词用 -a, -as, -a, -amos, -áis, -an。触发词：愿望、情感、无人称表达、建议、怀疑/否定、Ojalá。用于从属句中的 ‘que’ 之后。
Example: Espero que vengas. (I hope that you come.) Es importante que estudies. (It is important that you study.)
示例：我希望你来。你学习是很重要的。
7. Formal and Informal Commands Theorem | 命令式正式与非正式定理
Affirmative tú commands: use the third person singular of present indicative (habla, come, vive). Negative tú commands: use the second person singular of present subjunctive (no hables, no comas, no vivas). Usted commands: use the third person singular of present subjunctive (hable, coma, viva). Ustedes commands: use third person plural of present subjunctive (hablen, coman, vivan). Pronouns attach to affirmative commands, precede negative ones.
肯定 tú 命令式：使用陈述式现在时第三人称单数（habla, come, vive）。否定 tú 命令式：使用虚拟式现在时第二人称单数（no hables, no comas, no vivas）。Usted 命令式：使用虚拟式现在时第三人称单数（hable, coma, viva）。Ustedes 命令式：使用虚拟式现在时第三人称复数（hablen, coman, vivan）。代词附在肯定命令式后，放在否定命令式前。
Example: Come la fruta. → Cómela. (Eat the fruit. → Eat it.) No la comas. (Don’t eat it.)
示例：吃水果。→ 吃了它。别吃它。
8. Future and Conditional Simple Formulas | 简单将来时与条件式公式
Future: infinitive + -é, -ás, -á, -emos, -éis, -án. Conditional: infinitive + -ía, -ías, -ía, -íamos, -íais, -ían. Irregular stems: hacer → har-, decir → dir-, tener → tendr-, poder → podr-, etc. The conditional is used for polite requests and hypothetical situations.
将来时：动词不定式 + -é, -ás, -á, -emos, -éis, -án。条件式：动词不定式 + -ía, -ías, -ía, -íamos, -íais, -ían。不规则词干：hacer → har-，decir → dir-，tener → tendr-，poder → podr- 等。条件式用于礼貌请求和假设情境。
Example: Comeré, comerás, comerá… (I will eat, you will eat…) Comería, comerías, comería… (I would eat, you would eat…)
示例：我将吃、你将吃…… 我会吃、你会吃……
9. Direct and Indirect Object Pronoun Placement | 直接与间接宾语代词放置定理
Formula: pronoun(s) before conjugated verb, or attached to an infinitive/gerund/affirmative command. When both direct and indirect object pronouns appear, indirect comes first, then direct. The ‘le/les’ changes to ‘se’ before lo/la/los/las. The ‘redundant yo’ is sometimes used for emphasis: Me gusta a mí.
公式：代词放在变位动词前，或附在不定式/副动词/肯定命令式后。当直接与间接宾语代词共存时，间接在前，直接在后。’le/les’ 在 lo/la/los/las 前变为 ‘se’。有时为了强调可使用冗余代词：Me gusta a mí。
Example: Te lo doy. (I give it to you.) Dámelo. (Give it to me.) Se lo dije. (I told it to him/her.)
示例：我把它给你。给我它。我告诉他/她了。
10. Comparatives and Superlatives Construction | 比较级与最高级结构公式
Comparatives: más/menos + adjective/adverb/noun + que (more/less … than) or tan + adjective/adverb + como (as … as). Irregulars: bueno → mejor, malo → peor, grande → mayor, pequeño → menor. Superlatives: el/la/los/las + más/menos + adjective (+ de).
比较级：más/menos + 形容词/副词/名词 + que（比……更/更少）或 tan + 形容词/副词 + como（和……一样）。不规则形式：bueno → mejor, malo → peor, grande → mayor, pequeño → menor。最高级：el/la/los/las + más/menos + 形容词（+ de）。
Example: Soy más alto que tú. (I am taller than you.) Es tan inteligente como su hermana. (He is as intelligent as his sister.) Es el mejor de la clase. (He is the best in the class.)
示例：我比你高。他和他姐姐一样聪明。他是班上最好的。
11. Por vs Para – The Direction Theorem | Por 与 Para 的方位定理
Para expresses destination, purpose, deadline, recipient, comparison, and opinion. Por expresses motion through, cause, exchange, duration, means, and agent in passive. Mnemonic: PERFECT for para (Purpose, Effect, Recipient, Future point in time, Employment, Comparison, Toward) and DREEMS for por (Duration, Reason, Exchange, Emotion, Motion, Substitution).
Para 表达目的地、目的、截止日期、接收者、对比和观点。Por 表达穿过、原因、交换、持续时间、方式和被动语态中的施动者。记忆法：para 可以记作“目的、效果、接收、未来时间点、职业、对比、朝向”；por 记作“持续时间、原因、交换、情感、运动、代替”。
Example: Salgo para Madrid. (I leave for Madrid.) Gracias por la ayuda. (Thanks for the help.)
示例：我出发去马德里。谢谢你的帮助。
12. Si Clauses – The Hypothetical Theorem | Si 条件句假设定理
Three main patterns: (1) Si + present indicative → present/future/command. (2) Si + imperfect subjunctive → conditional simple. (3) Si + pluperfect subjunctive → conditional perfect. The first expresses real possibilities; the second and third express hypothetical or contrary-to-fact situations.
三种主要模式：(1) Si + 陈述式现在时 → 现在/将来/命令式。(2) Si + 虚拟式过去未完成时 → 简单条件式。(3) Si + 虚拟式过去完成时 → 复合条件式。第一种表达现实可能性；第二和第三种表达假设或与事实相反的情况。
Example: Si tengo tiempo, voy al cine. (If I have time, I go to the cinema.) Si tuviera dinero, viajaría. (If I had money, I would travel.)
示例：如果我有时间，我就去看电影。如果我有钱，我就会去旅行。
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