As an introduction to our lesson about accentuation, Carlos explains some different ways in which the word "accent" may be used.

In this second part of his lesson about accentuation, Carlos explains to us about monosyllabic, disyllabic, trisyllabic and polysyllabic words.

Carlos gives us some preliminary rules about how to divide Spanish words into syllables.

Carlos continues his series on accentuation by teaching us a few more rules regarding accent placement.

Carlos explains the four groups into which Spanish words are classified depending upon which of their syllables is accented as well as the rules regarding written accents.

In this final part of the videos dedicated to accentuation, Carlos explains diphthongs, triphthongs and hiatuses.

Carlos explains to us the three manners of addressing a conversational partner in Spanish: "tú," "usted" and "vos." Although all three of these personal pronouns could be translated as "you," the one that is utilized in a particular context depends upon factors such as the region where one lives as well as one's relationship with the person with whom he or she is speaking.

Known as the "tuteo," the "ustedeo" and the "voseo," Carlos explains the historical roots and evolution of these varying ways of saying "you" in different parts of the Spanish-speaking world. Factors which affect which form is utilized by a particular person in a particular situation include that person's country of origin as well as the relationship between the speaker and the person to whom he or she is speaking.

Carlos explains the forms of address used to address several conversational partners: "vosotros" and "vosotras," which tend to be used in Spain, and "ustedes," which tends to be used in Central and South America.

Carlos teaches us a trick for conjugating verbs with the "voseo" and challenges us to distinguish verbs in sentences which have been conjugated with the "tuteo," "voseo" and "ustedeo."

Carlos explains to us about cardinal numbers in Spanish, which are used to count and quantify elements.

Carlos explains to us about ordinal numbers, or those numbers used to express order or succession.

Carlos teaches us a plethora of Spanish demonyms, or proper nouns used to refer to the natives or inhabitants of certain countries, states or cities.

Carlos speaks to us about the nuances of Spanish collective nouns, which are nouns that refer to a number of beings within a specific category.

Carlos familiarizes us with some Spanish social media lingo, specifically for Facebook and Twitter.

Although Spanish often borrows English terms like "e-mail" and "password" to talk about terms related to the internet, Carlos provides us with several more proper Spanish alternatives.

Carlos teaches us how to conjugate Spanish verbs for commands, also known as the imperative mood, with the informal second person singular pronouns, "tú" and "vos."

Carlos teaches us the imperative conjugations of some commonly used verbs with the second person singular pronoun, "tú," as well as the formulas for creating the imperative with pronouns such as "usted," "vosotros" or "vosotras" and "ustedes."

To begin his lessons about diminutives and augmentatives, Carlos begins by speaking about suffixes, or endings added to words to alter their meaning.

Carlos explains how the purpose of diminutive and augmentative suffixes is to express increased or decreased intensity of the word to which they are attached and gives us some common examples in Spanish.

The present perfect tense in Spanish is used when an action in the past occurs within a time period that has not yet concluded. Carlos clearly explains how this compound verb tense is formed as well as giving us several examples.

The many types of past tense in Spanish can get confusing for English speakers. In this lesson, Carlos focuses on the simple past tense, or preterite, providing us with some excellent examples.

Carlos explains to us the range of meanings that the verb "tocar" can have in Spanish, depending upon the context.

The word, "vaina," is popularly used in many Latin American countries, and according to Carlos, who explains its origin and diverse uses, "defines everything and nothing at the same time."

Carlos explains to us, with examples, situations in which the present perfect tense should be employed.

In addition to beginning his explanation regarding situations in which the past imperfect tense is commonly used in Spanish, Carlos explains to us how to conjugate regular -ar, -er and -ir verbs as well as sharing with us some of the most common irregular verbs and their imperfect conjugations.

Carlos explains in detail the correct use of the negative form of the imperative tense, providing several examples.

Carlos explains to us in detail the imperative of the first person plural with many examples as well as providing us with the conjugations for several reflexive verbs.

Do you get confused when it comes to choosing between the prepositions "por" and "para"? In this series of videos, Carlos will clearly explain the difference between the two, with plenty of examples.

In the second part of this lesson, Carlos focuses on additional uses of the frequently confused prepositions, "por" and "para," particularly when talking about time and location.

We finish this series on the prepositions, "por" and "para," with some additional, quite common uses for you to put into practice.

There are two types of grammatical agreement in Spanish: noun agreement and verb agreement. In this chapter, Carlos explains to us the concept of noun agreement. Let's see what it's about!

In this second part of this lesson on grammatical agreement, Carlos explains verb agreement, or the necessary correspondence of number and grammatical person between a verb and its subject.

The terms "matemático" and "matemática" in Spanish can be used in a variety of ways, in singular and in plural, as nouns or adjectives, to mean different things. Carlos explains this and more in this introduction to Spanish math terminology.

Carlos shows us how to express the four types of mathematical operations in Spanish as well as teaching us terms that are frequently heard on the news and in studies.

In the first part of this lesson devoted to the five senses, Carlos will enlighten us regarding some different meanings of the word "sentido" in Spanish as well as telling us the Spanish names for the five senses.

In this second part of his lesson on the five senses, Carlos will share Spanish vocabulary related to our senses of hearing, taste, touch, sight, and smell.

There are many Spanish expressions that are related to the five senses. In this video, Carlos will teach us several that are related to the sense of sight, many of which have similar English counterparts.

Carlos continues his exploration of the five senses by teaching us some colloquial expressions that are related to the senses of smell and taste.

In this conclusion to his series on the five senses, Carlos will share with us some idiomatic expressions related to the senses of hearing and touch.

Let's start off this lesson by learning what prefixes are and seeing some examples of how they can be combined with nouns, adjectives, verbs, and adverbs.

This part of Carlos' lesson on prefixes focuses on locative prefixes, or those that indicate the position of someone or something.

Let's continue to learn about prefixes in Spanish with Carlos, focusing on the locative prefixes that describe superior and inferior positions.

In this part of his lesson on prefixes, Carlos addresses those locative prefixes that indicate intermediate, interior, and exterior positions.