Register By ‘register’ is meant the use of language appropriate for the social situation. The most obvious aspect of register is how a speaker’s language is adapted to the relative formality of a situation.

Grammar There will be some situations, such as formal presentations, in which Standard English will be most appropriate, whereas in other situations another dialect or variety may be more appropriate. A speaker may be able to use more than one dialect or varieties of English. 

Linguistic: structure and organisation of talk A skilled speaker will select and organise the content of their talk so that it is relevant, clear and comprehensible to listeners. They will also take account of the conventional ways in which language is designed to get things done in specific situations. 

Linguistic: rhetorical techniques such as metaphor, humour, irony and mimicry Good speakers are able to use devices such as metaphor, simile, anecdote and jokes to enhance their meanings and build rapport with their listeners. The effective use of such devices – which can also include such things as offering short lists, repeating key words for emphasis, and so on – can help a speaker communicate more effectively