The Thesis as a Map: One Sentence That Plans Your Whole Essay
Organisation of ideas is one of the three Language criteria, and the Language band ladder is built on cohesion — within paragraphs, between them, across the whole piece. The single most efficient way to earn that in an argumentative or discursive essay is a thesis that maps the essay before you write it.
What a map sentence does
It is the last sentence of your introduction. It states your position and names your reasons, in the order you will give them. Each reason then becomes one body paragraph, in that order.
Not a map: “There are many reasons why I agree with this statement.”
A map: “I largely agree, because these programmes hide the years of practice behind every act, and because they reward luck as heavily as they reward skill.”
From the second version the reader already knows paragraph one is about hidden practice, paragraph two is about luck, and paragraph three will deal with the other side.
The discursive version
Same idea, both sides named.
“A large city offers convenience and opportunity, but at the cost of space, quiet and affordability.”
Four paragraphs are now decided: convenience, opportunity, space and quiet, cost. The conclusion weighs them.
Topic sentences follow the map
Each body paragraph opens with a line that picks up its reason from the thesis. That is between-paragraph cohesion, and it costs nothing in words.
Too general: “City life is good because it is convenient.”
Just right: “The first thing a large city offers is time: work, shops and clinics sit within a short train ride, and the hours saved add up across a week.”
Practise it in three minutes
Take any past argumentative question. Write only the thesis sentence and the first line of each body paragraph. Nothing else. If those four or five lines read as a plan, the essay will hold together.
Read next
- O-Level English: Four Weeks Out, Here Is the Plan
- Continuous Writing: Content Is 10 Marks. Language Is 20.
- Cohesion: The One Thing That Moves You Up a Language Band
The Sentence Repair Kit Complete Bundle covers the sentence-level control that decides the Language band — all four editions for $22.90. Free practice sheets download instantly.
Mark allocations and assessment criteria from the SEAB GCE O-Level English Language (1184) syllabus, 2026.
