Interactive Grammar: Commas quiz
Master comma rules — listing items, joining clauses, after introductory phrases, and setting off non-essential information.
Writing Skills
Master commas, periods, quotation marks, semicolons, colons, and punctuation rules for writing.
Punctuation on Grammartier spans A2–B1 levels, with 7 interactive lessons including Commas, Apostrophes and Semicolons and Colons — each with clear explanations, real examples, and a quiz you can score instantly.
Master comma rules — listing items, joining clauses, after introductory phrases, and setting off non-essential information.
Use apostrophes correctly for contractions (don't, it's) and possessives (Tom's, the team's) in English writing.
Use semicolons to join related independent clauses and colons to introduce lists, explanations, and quotations.
Use quotation marks correctly for direct speech, titles, and special terms in both American and British English conventions.
Distinguish hyphens in compound words from en dashes in ranges and em dashes for parenthetical statements in formal writing.
Understand and correct comma splices — the error of joining two independent clauses with only a comma — using conjunctions, semicolons, or full stops.
Use parentheses () and square brackets [] correctly to add supplementary information, clarifications, and editorial insertions in formal and academic English writing.