This ITTT video looks at the structure of the Past Continuous tense, the tense that talks about an ongoing past action.
Positive: subject + was/were + present participle
I/He/She/It was cooking.
You/We/They were cooking.
Negative: subject + was/were + not + present participle
I/He/She/It was not cooking.
You/We/They were not cooking.
Question: was/were + subject + present participle
Was I/he/she/ it cooking?
Were you/we/they cooking?
ITTT's courses will teach you the different tenses and other grammar points. We will also help you learn interesting and exciting ways of teaching the language to your students. To find out more about out TEFL courses check the link above.