Present Continuous

For actions that are in progress or happening at the present time. Use the present of the "Be" verb (am, is or are) plus any verb with -ing ending.

For a video explanation, click here:

http://www.youtube.com/watch?v=b7Gw6MFRfLI

To read more or practice here:

http://www.englishpage.com/verbpage/presentcontinuous.html

http://www.ego4u.com/en/cram-up/grammar/present-progressive/form