This video provides some helpful advice on getting around London, including pointers on cabs, double-decker buses, and the Underground.

"One" and "ones" can replace nouns, but are not pronouns. They are prop words. Let's look at how they are used.

Catch up on winter vocabulary with Sigrid. It's also a great chance to practice words with "W," since there are plenty associated with winter.

We can use nouns, verbs, or adjectives to describe someone's personality. Sigrid shows us how to describe someone with a strong personality.

Here's how to pronounce a very important noun with an unusual plural!

True possessive pronouns can stand alone. They replace both the noun and its possessive adjective or determiner. These pronouns are very handy in introductions and conversations about favorites.

Sigrid takes us through the different persons using dependent possessive pronouns, also called possessive adjectives or possessive determiners. These little words are important when talking about names, your possessions, family and friends, characteristics, jobs, favorite things and just about everything else.

Actor George Clooney exchanges a few innocent words with a woman at a coffee bar, little aware that there might be serious consequences. Find out how serious he is about his Nespresso.

Sigrid talks about the difference between possessive nouns and other possessive words such as possessive determiners or articles like "my" and "your."

Sigrid reviews the object pronouns: "me," "you," "him," "her," "it," "us," "you," and "them."

Sigrid reviews the subject pronouns "I," "you," "he," "she," "it," "we," "you," and "they."

Here's a quick summary of the different kinds of words we have in the English language and what they are used for.

Dates are usually expressed with ordinal numbers. Sometimes, though, what we write is different from what we say.

Ordinal numbers help us put things in order or in a sequence. Sigrid teaches us the suffixes we use to turn cardinal numbers into ordinal ones.

Sigrid explains what cardinal numbers are and gives us some writing and pronunciation tips.