We often hear people referring to children as kids and the word guy also pops up regularly in conversations. According to dictionaries, these two words are used in informal situations.

If we did use informal words in formal situations such as a news report or a job interview, what could happen? Is it really going to be a disaster for the person speaking?

In this programme, Helen and Li ask some British people for their opinions on the use of informal words.

Do you know what the following words mean? Listen to the programme to check whether you are right.

1. Fella

2. Bloke

3. Folks

4. Bird

If you have a question for our team, send it to us at questions.chinaelt@bbc.co.uk and we might answer it on this programme.