During this lesson, English teacher Alexander presents and explains different greetings in English and the time of day when each is used.

Watch this video featuring Alexander Pointer to learn the many ways of greeting people in English.

Alexander Pointer takes us through the conjugations of the verb "to be" in the present tense and explains how to form the contraction (otherwise known as the "short form") for each one.

Alexander is showing us contractions of the negative forms of the verb "to be".

Did you know that the big letter “M” from the MacDonald’s logo might have a further significance? Many well-known brands, companies, and institutions have hidden meanings and messages in their logos, as well as some subtle and some not-so-subtle advertising.

Do you know what that little pocket inside the big pocket of your jeans was designed for, or why pen lids and spaghetti spoons have holes in them? Here are ten everyday things you may never have questioned the use of, but might be interested to know more about!

ALF has wandered into the home of Elvis Presley! At least that’s what he thinks based on the memorabilia that’s all around. And it doesn’t take long for “Elvis” himself to get home...

“Elvis” opens the door to a nosy neighbor, and then has the difficult task of dissuading Alf, who still believes he’s in the presence of “The King.”

ALF stands for Alien Life Form, and was the name of this nineteen eighties American sitcom and its main character. In this episode, ALF has promised to behave well for a week, taking to extremes a new role as a posh servant and chef. Now his host family is wishing for a return to normality.

ALF adopts the role of family psychologist, but however well-meaning his efforts, only succeeds in getting on everyone’s nerves!

Willie is sure he didn’t invite his boss to the party, and why are all his guests arriving in costume? Just as he guesses who might be responsible, ALF makes his entrance, masquerading as an old family friend.

English singer-songwriter Anne-Marie and American DJ Marshmello team up for this song about dealing with a friend who is interested in being something more.

The flamboyant pop sensation Lady Gaga talks about the creative process behind her single "Applause." She explains how being forced to slow down by a hip injury actually helped her to focus, about working with famous names from the world of art, and exactly how much it means to her to be performing again for her adoring fans.

Super Bowl results: The Denver defense sacked Panthers quarterback Cam Newton seven times over the course of the game, which ended in their favor 24-10.

They may have very different reputations, but both the great white shark and killer whale are fierce predators that face off in a showdown atop the ocean food chain.