Punctuation advanced — commas, semicolons, dashes cho band 8

Tại sao punctuation matter

Band 8 GRA = accuracy. Wrong punctuation = grammar error.

Band 7 candidates often:

• Comma splice (joining 2 sentences with comma)
• Missing comma after introductory phrase
• Misuse semicolon

Band 8 candidates use punctuation precisely.

5 essential rules

Rule 1: Comma after introductory phrase

Wrong: "After completing the survey researchers analyzed data." Right: "After completing the survey, researchers analyzed data."

Any phrase before main clause = comma needed.

Introductory phrases:

• After [time]: "After 2010, the trend changed."
• Although [contrast]: "Although effective, the method was costly."
• However: "However, critics disagree."
• Despite: "Despite the challenges, progress was made."
• In [context]: "In urban areas, pollution is severe."

Rule 2: Comma between independent clauses + coordinator (FANBOYS)

FANBOYS = For, And, Nor, But, Or, Yet, So

When joining 2 complete sentences with FANBOYS → comma needed.

Wrong: "The plan was effective but costs were high." Right: "The plan was effective, but costs were high."

Rule 3: NO comma between subject and verb (or before subordinator)

Wrong: "The new policy, will reduce emissions." (extra comma) Right: "The new policy will reduce emissions."

Wrong: "This works, because of careful planning." (no comma before because in middle) Right: "This works because of careful planning."

Exception: parenthetical phrases:

• "The new policy, which was passed last month, will reduce emissions."

Rule 4: Semicolon (;) — connects 2 related independent clauses

Use when: 2 sentences VERY closely related, no FANBOYS.

Wrong: "Education is essential, it shapes future generations." (comma splice) Right: "Education is essential; it shapes future generations." OR: "Education is essential, and it shapes future generations." OR: "Education is essential. It shapes future generations."

Use semicolon SPARINGLY (1-2 per essay). Overuse = pretentious.

Rule 5: Dash (—) for emphasis

Long dash (—) sets off important phrase. Like commas but more emphatic.

Example: "Three factors — funding, leadership, and timing — determined the project's success."