Passive with the Present Perfect
Adults Education
Mark explains how to make present perfect sentences in the passive voice. This video is for students at a pre-intermediate level.
Passive with Modals
Adults Education
Mark explains how to make passive sentences with modal verbs. This lesson is for students at a pre-intermediate level.
What is Color?
Adults Education
Have you ever wondered what color is? In this first installment of a series on light, Colm Kelleher describes the physics behind colors-- why the colors we see are related to the period of motion and the frequency of waves.
How Long (Part 3)
Adults Education
Mark describes the difference between for and since when discussing duration with the present perfect tenses. This video is for students at a pre-intermediate level.
How Long (Part 2)
Adults Education
Mark explains how to use the present perfect simple and present perfect continuous to describe duration of unfinished activities. This video is for students at a pre-intermediate level.
How Long (Part 1)
Adults Education
Mark explains how to use the present perfect tenses to describe duration. This video is for students at a pre-intermediate level.
Teaching our puppy Pacino how to catch
Adults Education
Teaching our puppy Pacino how to catch...it's going to take some work!
Have To (Part 3)
Adults Education
Mark gives more information about have to as well as the meaning and use of have got to. This video is for students at a pre-intermediate level.
Have To (Part 1)
Adults Education
Mark explains how to create sentences using have to. This video is for students at a pre-intermediate level.
Wish and Hope
Adults Education
Learn the meaning and usage of both wish and hope in English. This lesson is for students at a pre-intermediate level.
Amazing Resonance Experiment!
Adults Education
So this experiment is the Chladni plate experiment. I used a tone generator, a wave driver (speaker) and a metal plate attached to the speaker. First add sand to the plate then begin playing a tone. Certain frequencies vibrate the metal plate in such a way that it creates areas where there is no vibration. The sand "falls" into those areas, creating beautiful geometric patterns. As the frequency increases in pitch the patterns become more complex.
Future Aspects (Part 2)
Adults Education
Learn two ways to use be going to and how to use the present continuous to talk about the future. This lesson is for students at a pre-intermediate level.
Future Aspects (Part 1)
Adults Education
Learn the main meaning and usage of will to describe the future. This lesson is for students at a pre-intermediate level.
The Second Conditional (Part 2)
Adults Education
Learn how English speakers use the second conditional in English. This lesson is for pre-intermediate students.
The Second Conditional (Part 1)
Adults Education
Learn how English speakers make second conditional sentences, including the use of if and would. This lesson is for pre-intermediate students.
The First Conditional
Adults Education
Learn how to make and use first conditional sentences in English. This lesson is for pre-intermediate students.
How to Use the Passive Voice
Adults Education
Learn how English speakers use the passive voice. This lesson is for students at a pre-intermediate level.
How to Make Passive Sentences in English
Adults Education
Learn how to use be with a past participle to make English sentences in the passive voice. This lesson is for students at a pre-intermediate level.
The Differences between the First and Second Conditionals
Adults Education
Learn how English speakers choose between the first and second conditionals. This lesson is for pre-intermediate students.
The Meaning of the Present Perfect Simple
Adults Education
Learn the main general meaning of the present perfect simple as well as how English speakers use it to describe duration. This lesson is for students at a pre-intermediate level.
The Meaning and Use of Mustn't
Adults Education
Learn how English speakers use mustn't to express negative obligations. This lesson is for students at a pre-intermediate level.