"None," "something," "anything," and "nothing" can be used as pronouns. Sigrid explains how these words work.

Just as we use "something," "anything," and "nothing" for things, we use "someone," "somebody," "anybody," "anyone," and "nobody" for people.

We often use question words to ask questions. The five main ones start with "wh." Sigrid explains how they work.

Sigrid, here as Rita and Kathy, has fun practicing the 5 question words ("who," "what," "where," "when," and "why") on a train. She makes quite a nuisance of herself, too. More about the 5 W's in: Parts of Speech: Question Words - Part 1 of 3.

There's one more important question word to learn: "how." Sigrid provides plenty of examples of questions with "how," both by itself and together with an adjective or adverb.

Sigrid uses the question words "who," "what," "when," "where," "why," and "how" as she thinks out loud about her next vacation. Where will she go? How will she get there? How much will it cost?

Sigrid packs her carry-on bag for the flight to Paris. She talks about what she needs to pack, and why.

We use question words plus words like "some" and "any" to form new indefinite words, such as "sometime," "sometimes," and "anytime." This video is about question words "who," "what," and "when."

This video is about indefinite answers to the question words "where" and "how." We combine these question words with "some" and "any" to form new indefinite words, such as "somewhere," "somehow," "anywhere," "anyhow," and "anyway."

Adjectives are an important part of speech. They give us additional information about nouns. Let's look at how they work in English.

Sigrid looks at how the comparative and superlative forms of one- and two-syllable adjectives are created.

Here's a simple list of common, everyday adjectives in their positive, comparative and superlative forms, divided into groups to facilitate memorization.

Sigrid looks at the comparative and superlative forms of adjectives that have a "Y" or an "E" at the end, and also some that don't follow any pattern at all!

With longer adjectives, we have to add some extra words in order to form the comparative and superlative. Sigrid explains how.

Modal verbs are special verbs that go together with action verbs to indicate ability, permission, obligation and more. Let's see how they work.