Woman in red cardigan: People do get their tenses of a verb confused. Making sure that the verb is in the same tense all the way through a document or a letter or an email. If you read it to yourself ...

A doctor friend tells a story that illustrates why it's important to understand verb tenses. A patient whose first language is not English is asked about quitting smoking. He says, "I try. I don't ...

A suffix is a letter or group of letters that goes on the end of a word and changes its meaning. Adding the suffix -ing to the end of a noun can change it into a verb. Narrator: I've told you, fur ...