In formal writing you need to be able to recognise sentence fragment so you can avoid them.

Listen to this Khan Academy video about how to recognise fragments so you can avoid them in essay writing or any formal writing.

Check your understanding by doing this interactive activity about how to recognise sentence fragments.

In formal writing you need to be able to identify run-ons and commas splices. So what are they? Listen to this Khan Academy video to find out.

Check your understanding by doing this interactive activity about how to recognise run-ons and comma splices.