When you have two ideas of equal importance, you need a way to join them smoothly. Coordinating conjunctions do exactly that. The seven coordinating conjunctions in English are remembered with the mnemonic FANBOYS: for, and, nor, but, or, yet, so. In academic writing, the five you will use most frequently are 'and', 'but', 'or', 'so', and 'yet'.

Each conjunction signals a specific logical relationship. 'And' adds information of equal weight. 'But' introduces a contrast or exception. 'Or' presents alternatives. 'So' shows that the second idea is a consequence of the first. 'Yet' works like 'but' but with a stronger sense of surprise or contradiction — the second idea feels unexpected given the first. 'For' (meaning 'because') and 'nor' (connecting two negative ideas) appear less often but remain useful in formal writing.

There is one punctuation rule that examiners watch for closely: when a coordinating conjunction joins two independent clauses — two complete sentences that could stand alone — you must place a comma before the conjunction. Compare: 'The policy reduced emissions and created jobs' (one subject, two verbs, no comma needed) versus 'The policy reduced emissions, and it also created jobs' (two independent clauses, comma required). Getting this right consistently is important for your Grammatical Range and Accuracy score, as comma splices — joining two clauses with only a comma and no conjunction — are among the most frequent errors examiners see.

Choosing the right coordinator is not just a grammar exercise; it is a logic exercise. Before you write, ask yourself: what is the relationship between these two ideas? Is one a result of the other? Use 'so'. Is the second idea surprising given the first? Use 'yet'. The precision of your choice shows the examiner that you are in control of your argument's logical structure.

Correlative conjunctions work in pairs, bracketing two parallel elements to create a balanced, emphatic structure. The three pairs essential for academic writing are: not only...but also, either...or, and neither...nor.

'Not only...but also' is especially powerful in essays because it lets you emphasise that two things are true, with the second often being more surprising or significant than the first. In formal writing, you can strengthen this structure further by inverting word order after 'not only' — placing the auxiliary verb before the subject. For example: 'Not only does education reduce poverty, but it also promotes social cohesion.' This inversion signals advanced grammatical control and can push your Grammatical Range score toward Band 7.

'Either...or' presents two alternatives or possibilities. It works with both clauses and noun phrases: 'Governments can either raise taxes or cut public spending.' 'Neither...nor' negates both elements at once, which is concise and emphatic: 'Neither the government nor the private sector has offered a viable solution.'

The most important rule with all correlative conjunctions is parallelism. The grammatical structure following the first part must match the structure following the second. If you write 'Not only did the policy fail, but also caused economic damage,' the structures are mismatched. The correct version is: 'Not only did the policy fail, but it also caused economic damage.' Both sides now contain a subject plus verb structure.

Parallel structure is not just a grammar rule — it is a readability strategy. When the two halves of a correlative pair match in form, the reader processes the sentence more quickly and sees the logical connection more clearly. Examiners notice consistent parallelism because it signals a writer who is in control of sentence rhythm and information structure.

A semicolon is stronger than a comma but weaker than a full stop. Its primary role in academic writing is to join two independent clauses that are closely related in meaning — so closely that a full stop would feel disconnected, but a comma alone would create an error.

There are two main uses. First, you can use a semicolon on its own to link two parallel or contrasting ideas: 'Urbanisation drives economic growth; it also increases demand for housing and transport.' The semicolon signals that the two ideas belong together — they share a topic and develop a single argument.

Second, you can use a semicolon before a conjunctive adverb such as however, therefore, moreover, furthermore, consequently, or nevertheless. These words are not coordinating conjunctions — they are adverbs that show a logical relationship between clauses. They cannot join two clauses with just a comma (that would be a comma splice). The correct pattern is: clause; conjunctive adverb, clause. For example: 'The evidence is compelling; however, further research is needed before definitive conclusions can be drawn.'

Why does this matter for your exam score? Semicolons demonstrate that you understand sentence boundaries and logical cohesion. Many students at Band 5–6 overuse full stops, creating short, choppy sentences, or overuse commas, creating comma splices. The semicolon solves both problems: it creates flow between related ideas while maintaining correct sentence boundaries.

One important distinction: a semicolon is not the same as a colon. A colon introduces what follows — an explanation, a list, or an elaboration. A semicolon connects two ideas of equal weight. If the second clause explains or expands the first, use a colon. If the two clauses are parallel or contrasting, use a semicolon.