Forming Spanish Yes and No Questions by Using Intonation, Tags, and Inversion
You can easily form Spanish questions by changing your voice intonation, adding a tag phrase to a sentence, or inverting the order of the subject and verb. Here’s how.
Intonation
Intonation is by far the easiest way to ask a question in Spanish. If you’re speaking, all you need to do is raise your voice at the end of what was a statement and add an imaginary question mark at the end of your thought. When writing, you just write down your thought and put question marks before and after it: ¿Ud. quiere tomar algo? (Do you want to drink something?) It’s that simple.
The tags ¿No es verdad? and ¿Está bien?
The tags ¿No es verdad? and ¿Está bien? can have a variety of meanings:
You generally place ¿No es verdad? or ¿Está bien? at the end of a statement — especially when yes is the expected answer:
Ud. quiere tomar algo. ¿No es verdad? (You want to drink something, don’t you?)
Vamos al cine. ¿Está bien? (We're going to the movies, aren't we?)
Inversion
Inversion is the most complicated of these three methods. Very basically speaking, you switch the word order of the subject (whether it’s a noun or pronoun) and its accompanying verb form. Keep these things in mind:
With inversion, pronouns tied to the conjugated verb appear after it.
The question ¿Ud. tiene sed? (Are you thirsty?) becomes ¿Tiene Ud. sed? (Are you thirsty?). If you inverted the example ¿Ella va a tomar té? (Is she going to drink tea?), your new question would be ¿Va ella a tomar té? (Is she going to drink tea?).
If the subject is followed by two consecutive verbs, put it after the phrase containing the second verb.
For example, to invert ¿Uds. quieren comer? (Do you want to eat?), simply move the subject (Uds.) to the space after the second consecutive verb: ¿Quieren comer Uds.? (Do you want to eat?). But remember to keep the meaning of the phrase intact.
Also note that in most instances, the subject pronoun is omitted in Spanish when the subject is obvious: ¿Quieres comer algo ahora? (Do you want to eat something now?) doesn’t need its pronoun tú because the verb tense indicates that tú is the subject.
To ask a negative inverted question, put no before the inverted verb and noun or pronoun.
So if you’re starting with the question ¿Toma frutas tu amigo? (Does your friend eat fruit), just plunk a no in front of the verb to get ¿No toma frutas tu amigo? (Doesn’t your friend eat fruit?). For verbs preceded by a direct or indirect object pronoun or for reflexive verbs, the pronoun goes before the conjugated verb:

Spanish Glossary
adjective
A word that describes a noun or pronoun, giving it specific attributes or characteristics.

Spanish Glossary
adverb
A word used to modify a verb, adjective, or another adverb by expressing time, place, degree, and so on. Many Spanish adverbs end in -mente.

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bartering
Giving goods or services in return for other goods and services, as opposed to the exchange of money.

Spanish Glossary
cardinal number
Any number used in counting or showing how many.

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comparative
A form of an adjective or adverb which indicates that one thing has some feature to a greater or lesser extent than the thing it is being compared to. Example: slower, more believable.

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conditional
A verb tense that expresses an action that should have, could have, or would have happened if the conditions were right.

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conjugate
To give different forms of a verb according to voice, mood, tense, number, and person. A conjugated verb is a verb that has been changed from its infinitive form to a form that agrees with the subject.

Spanish Glossary
consonant
Any of the letters b, c, d, f, g, h, j, k, l, m, n, ñ, p, q, r, s, t, v, w, x, y, z; the double letters ch, ll, and rr may also be considered consonants in Spanish.

Spanish Glossary
customs
1. The government agency in charge of collecting taxes or duties imposed on imported and/or exported goods. 2. The common social acts and conventions of a particular area.

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declare
To inform customs officials of any goods you’re carrying that may be taxable.

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definite article
Any one of the words el, la, los, or las used as adjectives to point out a specific noun.

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demonstrative adjective
An adjective that indicates or points out this, that, these, or those people, places, or things to which a speaker is referring.

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demonstrative pronoun
Replaces a demonstrative adjective and its noun.

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diminutive
1. Small. 2. A word that has been altered with a suffix to indicate a degree of smallness, often ending with -ito or -ita.

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diphthong
A complex vowel sound made by gliding from one vowel sound to the next within the same syllable.

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direct object noun
A sentence element that answers the question, Whom or what is the subject acting upon? and may refer to people, places, things, or ideas.

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direct object pronoun
Replaces a direct object noun and agrees with it in number and gender.

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duty
A tax imposed on imports, exports, or manufactured goods.

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future
Verb tense indicating an action to come.

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gerund
A verb form that ends in -ing and works like a noun. Spanish gerunds are also derived from verbs.

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haggling
Negotiations between a seller and a buyer to come to an agreement upon the price of an item for sale. The vendor typically proposes a high price while the buyer suggests a significantly lower price, and, through bartering, the two typically meet somewhere in the middle.

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imperative
A verb mood that indicates a command or request.

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imperfect
Verb tense indicating a continuing, uncompleted, customary, or simultaneous past action.

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indefinite article
Any one of the words un, una, unos, or unas used as adjectives to point out some person, place, thing, or idea, but not a specific one.

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indirect object noun
Answers the question To or for whom is the subject doing something? and refers only to people or beloved pets.

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indirect object pronoun
Replaces an indirect object noun, but is also used when the indirect object noun is mentioned.

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infinitive
The unconjugated form of a verb — dormir (to sleep), for example.

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interrogative adverb
An adverb used to ask a question.

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interrogative pronoun
A word that replaces a noun and is used to ask a question.

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market
1. (noun) In Spanish cultures, a traditional market is where vendors gather to sell their goods. Markets may be open or under a roof, and they offer a less formal shopping environment than typical supermarkets or grocery stores. Prices are usually negotiable. 2. (verb) To advertise and sell an item.

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mood
1. A characteristic of a verb that indicates the manner in which the action occurs. 2. A characteristic of a person that indicates the overall emotional state of that person.

Spanish Glossary
ordinal number
A number used to indicate order in a particular series.

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past participle
A form of a verb that expresses a completed action or a time gone by.

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possessive adjective
A word that goes before the noun that’s possessed in order to express my, your, his, her, its, our, or their.

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possessive pronoun
A word that replaces a noun and its possessive adjective and indicates ownership.

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preposition
A word that connects nouns to nouns, verbs to verbs, or verbs to nouns/pronouns and shows their relationship to one another.

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prepositional pronoun
A pronoun that serves as the object of a preposition and always follows the preposition.

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preterit
Verb tense expressing a past action or state.

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pronoun
A word that takes the place of a noun in a sentence.

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reflexive pronoun
A pronoun used in conjunction with a reflexive verb to express that an action is performed by a subject on itself.

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reflexive verb
A verb that indicates that the sentence's subject is acting upon itself. Reflexive verbs require reflexive pronouns.

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stem-changing verb
A verb that requires an internal change in the vowel before the -ar, -er, or -ir infinitive ending in all the singular and third-person plural forms of certain tenses.

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subject pronoun
A pronoun used as a subject.

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subjunctive
A grammatical mood indicating uncertainty, desire, supposition, hypothetical and theoretical situations, or impersonal opinions.

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subordinate clause
A part of a sentence containing a subject and verb that can’t stand on its own but describes something in the larger sentence.

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suffix
Letters added to the end of a word that change its meaning, give it a different grammatical function, or form a new word.

Spanish Glossary
superlative
A form of an adjective or adverb which indicates that one thing has some feature to a greater degree than anything it is being compared to. Example: greatest, most honorable

Spanish Glossary
syllable
A word or part of a word pronounced with a single sound, usually consisting of a vowel and one or more consonants.

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tilde
A mark (~) used in Spanish over an n to indicate the ny sound.

Spanish Glossary
vowel
Any of the letters a, e, i, o, and u. The letter y is never a vowel in the Spanish language, unlike its use in English.