For me, the skeleton (or framework or basic structure) of a task 2 essay is:
- the introduction
- topic sentences for main paragraphs
- and the conclusion
Look at this essay 'skeleton' for example:
People have different views about whether parents or schools should bear the responsibility for helping children to become good citizens. In my view, this responsibility should be shared.
On the one hand, parents certainly have a vital role to play in the upbringing of their children.
On the other hand, school teachers may contribute almost as much as parents to the development of a child.
In conclusion, both parents and schools should work together to ensure that young people become polite and productive members of society.
Can you see how the 'skeleton' communicates my overall answer very clearly? The only thing missing is the detail in paragraphs 2 and 3.
Have a look at an essay that you have written. How clearly does the skeleton communicate your message?