📚 Year 13 OCR Spanish: Formula & Theorem Quick Reference | Year 13 OCR 西班牙语：公式定理速查手册
Welcome to your ultimate grammar quick reference for Year 13 OCR Spanish. Think of grammar rules as formulas – once you know the structure, you can apply it to any context. This manual collects the essential ‘theorems’ of Spanish grammar, covering verb tenses, subjunctive mood, pronouns, and sentence structures that will help you speak and write with confidence at A-Level. Each section presents a clear structural formula, followed by worked examples, just like solving an equation. Use this as your go-to revision tool to master the logic behind the language.
欢迎使用 Year 13 OCR 西班牙语终极语法速查手册。把语法规则想象成公式——一旦掌握了结构，就能将其应用于任何语境。本手册汇集了西班牙语语法的核心“定理”，涵盖动词时态、虚拟语气、代词以及句型结构，帮助你在 A-Level 阶段自信地表达。每一节都展示出清晰的结构公式，随后是演示例句，就像解方程一样。请将本手册作为首选复习工具，轻松掌握语言背后的逻辑。
1. Present Indicative Regular Verbs Formula | 陈述式现在时规则动词公式
Regular present indicative verbs follow a predictable stem plus ending pattern. For -AR verbs, the formula is: 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. Apply this theorem to any regular infinitive by removing the -AR, -ER, or -IR ending and attaching the appropriate suffix. This is the foundational equation for building simple sentences.
规则陈述式现在时动词遵循可预测的词干加词尾模式。对于 -AR 动词，公式为：词干 + o、as、a、amos、áis、an。对于 -ER 动词：词干 + o、es、e、emos、éis、en。对于 -IR 动词：词干 + o、es、e、imos、ís、en。将任何规则不定式的 -AR、-ER 或 -IR 结尾去掉，并加上相应的后缀，便可应用这一定理。这是构建简单句子的基础方程。
| Subject | Hablar (to speak) | Comer (to eat) | Vivir (to live) |
|---|---|---|---|
| yo | hablo | como | vivo |
| tú | hablas | comes | vives |
| él/ella/Ud. | habla | come | vive |
| nosotros/as | hablamos | comemos | vivimos |
| vosotros/as | habláis | coméis | vivís |
| ellos/as/Uds. | hablan | comen | viven |
Memorising these three patterns gives you the power to conjugate thousands of verbs accurately in the present tense. Always check whether the verb is truly regular before applying the formula; common irregulars are covered separately.
记住这三种模式，你就能准确变位成千上万的动词现在时。在应用公式之前，务必确认动词是否确实规则；常见不规则动词会另行介绍。
2. Stem-Changing and Irregular Present Verbs | 陈述式现在时不规则动词公式
Many high-frequency verbs operate like modified formulas. The ‘boot’ or stem-change formula affects all persons except nosotros and vosotros. The key transformations are: e → ie (pensar: pienso, piensas, piensa, pensamos, pensáis, piensan), o → ue (poder: puedo, puedes, puede, podemos, podéis, pueden), e → i (pedir: pido, pides, pide, pedimos, pedís, piden). Additionally, some verbs have an irregular first person only, such as tener (tengo), venir (vengo), hacer (hago), salir (salgo). Treat these as special constants in the tense equation.
许多高频动词的运行方式如同修正后的公式。“靴状”或词干变化公式会影响除 nosotros 和 vosotros 之外的所有人称。关键变化有：e → ie（pensar: pienso、piensas、piensa、pensamos、pensáis、piensan），o → ue（poder: puedo、puedes、puede、podemos、podéis、pueden），e → i（pedir: pido、pides、pide、pedimos、pedís、piden）。此外，部分动词仅第一人称单数不规则，如 tener（tengo）、venir（vengo）、hacer（hago）、salir（salgo）。可将这些视为时态方程中的特殊常量。
The completely irregular verbs ser (soy, eres, es, somos, sois, son), ir (voy, vas, va, vamos, vais, van), estar (estoy, estás, está, estamos, estáis, están) and haber (he, has, ha, hemos, habéis, han) must be memorised individually, as they follow no predictable formula. In exams, these are tested frequently.
完全不规则动词 ser（soy、eres、es、somos、sois、son）、ir（voy、vas、va、vamos、vais、van）、estar（estoy、estás、está、estamos、estáis、están）和 haber（he、has、ha、hemos、habéis、han）必须单独记忆，因为它们不遵循可预测的公式。这些动词在考试中出现频率极高。
3. Preterite vs Imperfect: The Two Past Formulas | 简单过去时与过去未完成时对比公式
Understanding the distinction between the preterite (pretérito indefinido) and the imperfect (pretérito imperfecto) is crucial for narrating in the past. The preterite formula is used for completed actions with a clear start and end, often accompanied by specific time markers. The imperfect formula is used for descriptions, ongoing past actions without a defined endpoint, habitual routines, and background information. Think of the preterite as the snapshot, the imperfect as the video.
理解简单过去时（pretérito indefinido）和过去未完成时（pretérito imperfecto）之间的区别对于叙述过去事件至关重要。简单过去时公式用于有明确开始和结束的已完成动作，常伴随具体时间标记。过去未完成时公式用于描述、无明确终点的持续动作、习惯性日常行为以及背景信息。可将简单过去时看作快照，过去未完成时看作视频。
Morphologically, the preterite regular formula: -AR verbs: stem + é, aste, ó, amos, asteis, aron; -ER/-IR verbs: stem + í, iste, ió, imos, isteis, ieron. The imperfect regular formula is simpler: -AR verbs: stem + aba, abas, aba, ábamos, abais, aban; -ER/-IR verbs: stem + ía, ías, ía, íamos, íais, ían. Only three verbs are imperfect irregulars: ir (iba), ser (era), ver (veía).
形态上，简单过去时规则公式：-AR 动词：词干 + é、aste、ó、amos、asteis、aron；-ER/-IR 动词：词干 + í、iste、ió、imos、isteis、ieron。过去未完成时规则公式则更为简单：-AR 动词：词干 + aba、abas、aba、ábamos、abais、aban；-ER/-IR 动词：词干 + ía、ías、ía、íamos、íais、ían。只有三个动词在未完成时中是不规则的：ir（iba）、ser（era）、ver（veía）。
Example contrast: ‘Cuando era niño, jugaba al fútbol todos los días’ (Imperfect for background and habit) vs ‘Ayer jugué al fútbol y marqué un gol’ (Preterite for completed events). Always ask: is this action over or setting the scene? Use the corresponding theorem.
示例对比：“Cuando era niño, jugaba al fútbol todos los días”（未完成时表背景和习惯）与“Ayer jugué al fútbol y marqué un gol”（简单过去时表已完成事件）。永远要问自己：这个动作是已经结束还是在铺设场景？选择对应的定理。
4. Present Subjunctive Formation and Usage Formula | 虚拟语气现在时公式与使用规则
The present subjunctive formula begins with the first-person singular of the present indicative. Remove the -o and add the opposing vowel endings: for -AR verbs, use -e, -es, -e, -emos, -éis, -en; for -ER and -IR verbs, use -a, -as, -a, -amos, -áis, -an. Stem-changers keep their boot pattern, and the few irregulars (sea, esté, vaya, sepa, haya) are derived from their indicative first persons. The formula creates a new mood for expressing doubt, desire, emotion, and conjecture.
虚拟语气现在时公式始于陈述式现在时第一人称单数。去掉 -o 并加上相反的元音词尾：对于 -AR 动词，使用 -e、-es、-e、-emos、-éis、-en；对于 -ER 和 -IR 动词，使用 -a、-as、-a、-amos、-áis、-an。词干变化动词保持其“靴状”模式，少数几个不规则动词（sea、esté、vaya、sepa、haya）则由其陈述式第一人称派生而来。该公式创造出一种新的语气，用于表达怀疑、愿望、情绪和推测。
When to deploy the subjunctive formula is governed by the W.E.I.R.D.O. theorem: Wishes (querer que), Emotions (me alegra que), Impersonal expressions (es importante que), Recommendations (recomiendo que), Doubt/denial (dudo que), Ojalá (ojalá que). Whenever the main clause expresses one of these concepts and there is a change of subject, the subordinate verb takes the subjunctive.
何时使用虚拟语气公式由 W.E.I.R.D.O. 定理决定：Wishes（愿望：querer que），Emotions（情绪：me alegra que），Impersonal expressions（无人称表达：es importante que），Recommendations（建议：recomiendo que），Doubt/denial（怀疑/否定：dudo que），Ojalá（但愿：ojalá que）。只要主句表达上述概念之一且主语发生变化，从句动词就使用虚拟语气。
For example: Quiero que tú hables más despacio. Dudo que ellos vengan a tiempo. Es necesario que nosotros estudiemos. The formula always appears after que and depends on the main verb’s trigger.
例如：Quiero que tú hables más despacio. Dudo que ellos vengan a tiempo. Es necesario que nosotros estudiemos. 该公式永远出现在 que 之后，并取决于主句动词的触发条件。
5. Imperfect Subjunctive Formula | 虚拟语气过去时公式
The imperfect subjunctive is formed using the third-person plural of the preterite indicative. Remove the -ron and add the endings -ra, -ras, -ra, -ramos, -rais, -ran (or the alternative -se series: -se, -ses, -se, -semos, -seis, -sen). Both forms are interchangeable in meaning, though the -ra form is more common in spoken Spanish. This formula is required when the main clause is in a past tense or conditional and a subjunctive trigger is present.
虚拟语气过去时由陈述式简单过去时的第三人称复数构成。去掉 -ron 并加上词尾 -ra、-ras、-ra、-ramos、-rais、-ran（或替代的 -se 系列：-se、-ses、-se、-semos、-seis、-sen）。两种形式在意义上可以互换，不过在口语中 -ra 形式更为常见。当主句为过去时或条件式，且存在虚拟语气触发条件时，必须使用该公式。
Example derivation: Tuvieron → tuvie- → tuviera, tuvieras, tuviera, tuviéramos, tuvierais, tuvieran. Similarly, hicieron → hicie- → hiciera, etc. This works for all verbs without exception, making it a remarkably reliable theorem. Use it after expressions like ‘Era importante que…’, ‘No creía que…’, ‘Me gustaría que…’.
推导示例：Tuvieron → tuvie- → tuviera、tuvieras、tuviera、tuviéramos、tuvierais、tuvieran。类似地，hicieron → hicie- → hiciera 等等。这一定理适用于所有动词，无例外，因此非常可靠。请用于诸如“Era importante que…”、“No creía que…”、“Me gustaría que…”等表达之后。
6. Conditional Sentences: ‘If’ Formulas | 条件句公式
Spanish conditionals work as a set of logical sequences. The three primary patterns are the equation chains for realistic, hypothetical, and impossible situations. Type 1 (real): Si + presente indicativo → presente / futuro / imperativo. Type 2 (hypothetical): Si + imperfecto de subjuntivo → condicional simple. Type 3 (past impossible): Si + pluscuamperfecto de subjuntivo → condicional compuesto / pluscuamperfecto de subjuntivo. Each formula precisely matches the time and probability of the condition.
西班牙语条件句是一套逻辑序列。三种主要模式是用于现实、假设和不可能情况的方程链。类型一（真实）：Si + 陈述式现在时 → 现在时 / 将来时 / 命令式。类型二（假设）：Si + 虚拟过去未完成时 → 简单条件式。类型三（过去不可能）：Si + 虚拟过去完成时 → 复合条件式 / 虚拟过去完成时。每种公式都精确匹配条件的时间与可能性。
Type 1: Si tienes tiempo, llámame. Type 2: Si tuviera dinero, viajaría por el mundo. Type 3: Si hubiera sabido la verdad, habría actuado de otra manera. Never mix indicative with subjunctive incorrectly in the same formula; allow the theorem to guide your choice.
类型一：Si tienes tiempo, llámame. 类型二：Si tuviera dinero, viajaría por el mundo. 类型三：Si hubiera sabido la verdad, habría actuado de otra manera. 切勿在同一公式中将陈述式与虚拟式错误混用；让定理引导你的选择。
7. Pronoun Placement Formulas | 代词位置公式
Object pronouns (me, te, lo/la, nos, os, los/las) and reflexive pronouns follow strict positional rules depending on the verb form. The general formula: with a conjugated verb, pronouns go before the verb (excepting affirmative commands). With infinitives, gerunds, and affirmative commands, pronouns are attached to the end, often requiring a written accent to maintain stress. This is the attachment theorem.
宾语代词（me、te、lo/la、nos、os、los/las）和反身代词根据动词形式遵循严格的位置规则。一般公式：与变位动词连用时，代词置于动词之前（肯定命令式除外）。与不定式、副动词和肯定命令式连用时，代词附加在词尾，通常需要添加书写重音以保持重音位置。这就是附加定理。
Affirmative command formula: Verb + pronoun(s) → dímelo, póngaselo. Negative command: no + pronoun(s) + verb → no me lo des. Infinitive/gerund: verb form + pronoun(s) → voy a hacerlo / quiero comprártelo / está leyéndola. Optionally, before the conjugated verb: lo voy a hacer. Both structures are valid.
肯定命令式公式：动词 + 代词 → dímelo，póngaselo。否定命令式：no + 代词 + 动词 → no me lo des。不定式 / 副动词：动词形式 + 代词 → voy a hacerlo / quiero comprártelo / está leyéndola。也可以选择将代词置于变位动词前：lo voy a hacer。两种结构均正确。
8. Passive Voice and Impersonal ‘Se’ Formulas | 被动语态与无人称句公式
The true passive formula is ser + past participle (agreeing in gender and number) + por + agent. For example: El libro fue escrito por Cervantes. However, Spanish frequently avoids this heavy construction by using the passive reflexive with ‘se’ or the impersonal ‘se’. The impersonal theorem: se + verb in third-person singular (sometimes plural) to express ‘one does’ or ‘people do’.
真正的被动公式是 ser + 过去分词（性和数一致）+ por + 施事者。例如：El libro fue escrito por Cervantes。 然而，西班牙语通常通过“se”被动反身或“se”无人称句来避免这种笨重的结构。无人称定理：se + 第三人称单数（有时复数）动词，表达“人们做某事”或“某事被做”。
Impersonal/passive se formulas: Se habla español aquí. (Spanish is spoken here.) Se venden coches. (Cars are sold.) Note the number agreement: if the noun receiving the action is plural, the verb becomes plural. The formula remains elegant: Se + verb (3rd sing/pl) + subject/object. This theorem appears frequently in formal writing and exam texts.
无人称/被动“se”公式：Se habla español aquí.（这里讲西班牙语。）Se venden coches.（出售汽车。）注意数的一致：若承受动作的名词为复数，动词也变为复数。该公式始终优雅：Se + 动词（第三人称单/复数）+ 主语/宾语。这一定理在正式书面语和考试文章中频繁出现。
9. Prepositions with Verbs: Fixed Pairings | 动词与前置词固定搭配公式
Certain Spanish verbs demand a specific preposition before an infinitive or noun. Learning these as inseparable pairs — like a formula — prevents common errors. Key examples: empezar a (to start to), acabar de (to have just), insistir en (to insist on), soñar con (to dream about), alegrarse de (to be glad about), casarse con (to marry), pensar en (to think about). These prepositions do not translate literally from English, so the equation must be memorised.
某些西班牙语动词要求在不定义或名词前使用特定前置词。像公式一样将这些固定配对学习可以防止常见错误。关键例子：empezar a（开始做），acabar de（刚刚做），insistir en（
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