1. FOR AND AGAINST ESSAY

2. STRUCTURE
OPENING: You state the topic and talk generally about it, but without giving your opinion.
BODY: Establishment of the points for and the points against in two paragraphs (always with justification).
CLOSING: Includes your opinion or a consideration/summary of the topic.

3. TIPS
Make a list of the points for and the points against the topic before you start writing.
Do not use informal style: short forms or colloquial language.
Do not use strong or emotional language (I firmly believe, I know, I therefore feel...)
Write well-developed paragraphs (always supported by reasons or examples).
Opinion words (I believe, In my opinion, I think...) are used in the closing paragraph to give your opinion on the topic.

4. Connectors
ADDITION: and, in addition, furthermore, moreover, what's more, also, too, as well as
CONTRAST: but, however, nevertheless, yet, still, although, in spite, despite, even if (incluso si), even though (a pesar de que, aunque)
EXAMPLE: for example, for instance, such as, like, particularly, especially, (more) specifically

5. USEFUL LANGUAGE On the one hand,... On the other hand,...
It is true that,...
Firstly/ Secondly/ Thirdly,...
Such as...
Due to...
As a result,...
I believe that...
In my opinion,...
In my view,...
The question is whether...
Consequently...
To sum up,...
In conclusion,...

6. Links http://academicwriting.wikidot.com/for-and-against-essays