Curated OER
The Present & Imperfect Progressive
Starting off with present participles, this resource tackles the progressive with grammatical explanations, examples in English and Spanish, and an interactive practice exercise. Use the menu at the top of the webpage to navigate to each...
Other
Jefferson County School Dist.: Irregular & Helping Verbs
This site has an online slide show offers a drill on forming irregular verbs. One slide of 63 includes information on helping verbs. Last slide has links to some online practice for irregular verbs.