The ability to develop arguments is useful both in speaking and writing.
Why is it important?
When you answer exam questions in speaking or in writing it is not only language (grammar, vocabulary) that is assessed, but also, and sometimes primarily, the content and the ability to develop logical and effective arguments.
How to do this?
IN WRITING it is all about a paragraph structure. If you follow the following structure, you can be sure your writing will be logical, coherent and easy to follow.
introduces the subject of the paragraph
develop the subject by presenting
concludes the paragraph by
offering a solution/recommendation
offering a warning and/or
leading on to the next paragraph
IN SPEAKING the structure of a statement is mostly the same:
STRUCTURE OF A SPOKEN ARGUMENT
which summarises the whole statement
which develop all the aspects of the topic sentence by mentioning:
data (numbers, statistics, percentage, proportion)
example (for example, for instance)
explanation (it means, namely, I mean, to be more specific)
justification/reason (this is because, it is caused by, it is a result of)
consequences (consequently, therefore, so, due to this fact)
contrast (however, on the other hand, nevertheless, whereas)
in which you:
sum it all up
give a suggestion
give a recommendation
offer a warning