Writing and accuracy · GCSE English Language
SPaG and accuracy
Protect writing marks with sentence control: full stops, comma splices, apostrophes, homophones, and ambitious vocabulary you can actually spell.
Accuracy is not a side task. A controlled sentence is a mark. A comma splice is a leak. Check the errors you always make, not a fantasy list of every rule.
The important bits
What you need to know
- 1
A sentence needs a main clause and an appropriate stop. Two main clauses joined by a comma alone are a comma splice: split them, or use a conjunction, or use a semicolon.
- 2
Apostrophes mark omission (don’t) or possession (the writer’s tone, the writers’ viewpoints). They do not make a simple plural.
- 3
Its = belonging to it. It’s = it is. You’re = you are. Your = belonging to you. There / their / they’re must be chosen, not guessed.
- 4
Paragraph when the idea, time, place or speaker changes. A page-long block, however stylish, is poorly organised.
- 5
Ambitious vocabulary scores only if it is accurate and apt. “The rain was nefarious” is worse than “the rain needled the roof”.
- 6
Tense and person should be consistent in a narrative unless you are controlling a flashback. Accidental drift is an accuracy error.
- 7
Speech punctuation: new speaker, new line; commas before closing inverted commas when a reporting clause follows.
- 8
Build a personal checklist from your last mock: three recurring errors. In the final five minutes, hunt only for those.
Go deeper
The comma splice is the most expensive habit
Students who write fluently often run sentences together: “The platform was empty, the clock had stopped.” That comma is doing a full stop’s job. Repair it in one of three ways. Two sentences: “The platform was empty. The clock had stopped.” A coordinating conjunction: “The platform was empty, and the clock had stopped.” A semicolon if the two clauses are closely linked and balanced: “The platform was empty; the clock had stopped.” Subordination is a fourth route: “Because the clock had stopped, the platform felt abandoned.” Each repair is a different rhythm, which is why accuracy work improves style rather than flattening it. In the last minutes of Question 5, look specifically for commas between two things that could be sentences on their own. That hunt is faster than rereading for “mistakes” in the abstract.
Go deeper
Apostrophes and homophones are binary marks
There is no stylistic defence of “the writers viewpoint” when you mean one writer, or “could of” when you mean “could have”. Possession: the boy’s bag (one boy), the boys’ bags (several boys). A plural that is not possessive takes no apostrophe: three stations, not three station’s. Homophones survive because they sound identical when you write fast. Train your eye in the check: circle its/it’s and your/you’re on the last read. If you can substitute “it is” and the sentence still works, you wanted it’s. The same test works for you’re/you are. These sit in the highest writing bands because the mark scheme still counts them when the content is ambitious.
Go deeper
Sentence variety should be deliberate, not accidental
A page of identical simple sentences sounds like a primary list. A page of identical long sentences sounds like a writer who cannot land. Aim for a mix you can name: a simple sentence for a shock; a compound sentence for a pair of actions; a complex sentence for cause, contrast or time. A colon can introduce a list or a revelation: “He understood at last: the footsteps were his own.” A dash can insert a beat. Do not sprinkle punctuation you cannot explain. Semicolons join two complete clauses; they are not a glamorous comma. Brackets can hide a wry aside in transactional writing, but a speech full of brackets will not sound spoken. Practise these patterns in revision so that in the exam you are choosing a sentence, not surviving one. Control is the overlap of SPaG and craft.
See the idea in action
Draft: “The platform was empty, the clock had stopped, it was raining.” Repaired: “The platform was empty. The clock had stopped, and rain needled the roof.” You have removed a splice, kept a compound sentence for the paired atmosphere, and replaced a weak “it was raining” with a precise verb.
Exam technique
Turn knowledge into marks
In the final five minutes, check only your usual three errors. For most students that is comma splices, its/it’s, and a handful of spellings (definitely, separate, necessary, rhythm, beginning).
Common mistakes
Do not give these marks away
- 01
Joining complete sentences with a comma, especially in description when the images come quickly.
- 02
Apostrophes on ordinary plurals, or it’s when you meant belonging to it.
- 03
Choosing a long, misspelt word to sound sophisticated when a short accurate verb would have scored more.
Which version punctuates two complete clauses correctly?
AThe platform was empty, the clock had stopped.
BThe platform was empty. The clock had stopped.
CThe platform was empty the clock had stopped.
DThe platform was empty; and the clock had stopped.
Show the answer
The platform was empty. The clock had stopped.. Two main clauses need a full stop, a semicolon, or a comma plus a conjunction. A comma alone is a splice. A semicolon plus “and” is overloaded.
Quick questions
If this is the bit you searched
Does SPaG really change the grade?
Yes. Writing responses have an accuracy strand. Repeated splices, homophone errors and missing paragraphs cap the mark even when ideas are strong.
Should I avoid complex sentences to stay safe?
No. Use some, and punctuate them. A paper of only safe baby sentences will not reach the top of the organisation and vocabulary marks either.