Session 01  ·  Student Handout  ·  Boundaries · Standard English Conventions

The Two-Clause Engine & SEC Diagnostic

Standard English Conventions looks like dozens of rules. It is really one engine — every sentence is built from independent and dependent clauses, and most errors are just clauses joined the wrong way. Learn the engine first; everything else bolts onto it.

Boundaries Phase Boundaries Session 01 of 10
01 Independent vs. Dependent Clauses
The one distinction the whole domain rests on
An independent clause (IC) has a subject and a verb and can stand alone as a sentence: The experiment failed. A dependent clause (DC) also has a subject and verb but begins with a word that makes it unable to stand alone — because, although, when, if, since, while, that, which: Although the experiment failed… leaves you waiting for the rest.
Test any clause: cover everything else and ask “could this be a text message on its own?”

IC “The data was inconclusive.” — yes, complete.
DC “Because the data was inconclusive” — no, it leaves you hanging. The word because is the tell.

02 The 3-Step Boundary Test
Run this before reading the answer choices
1 · Label each side of the blank: IC or DC?   2 · Name the structure (IC+IC, IC+DC, DC+IC).   3 · Pick the legal joiner for that structure.
Most SEC questions are decided at Step 1

If both sides are ICs, you need a strong joiner (period, semicolon, or comma + FANBOYS). If one side is a DC, a comma — or nothing — usually does the job. Naming the two sides tells you which family of answers is even possible.

03 Your 10-Hour SEC Map
Where the points are
SEC is about a quarter of the Reading & Writing score. This workshop attacks it in four blocks: Boundaries (clauses, joining, connectors) · Punctuation (commas, semicolons/colons/dashes, apostrophes) · Form & Agreement (subject–verb, pronouns, verbs & modifiers) · a Mixed mock to convert it all into exam points.
Ready to practice?

14 questions for this session — 4 guided (label the structure first), 6 on the clock, and 4 in home practice. Every timed score feeds your sub-skill Error Log.

Open Session 01 Exercises →