To native English-speakers an incorrect pronoun is like a clanging bell, difficult to ignore and a signal that English may not be the speaker's first language. So it's important to get to grips with the many different pronouns and learn when it is appropriate to use each of them. You can find out more by watching our English pronouns video lesson online.
At ESO, we provide our members with videos of all English grammar rules and explanations online. ESO members can sit and watch the videos one at a time to improve their knowledge of English grammar, or simply dip into the video library whenever they need to revise a topic, or look up something with which they are not familiar.