📖 Lesson B2 Grammar📐 Grammar

🎁 Horizon: Extra-Info Clauses

Second input lesson of the relative-clauses expedition. Learners contrast defining and non-defining clauses through sentences whose truth changes with commas, master the comma-clause rulebook (who/which/whose/where only, never that, never drop the pronoun), and train the audible comma-pause. The story turns the whiteboard into an operating table for Sentence Surgery: flat sentences get enriched with bonus clauses, and Priya discovers the super-which that comments on a whole sentence.

🎒 Teens (11–16) schedule 45 min signal_cellular_alt Medium
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view_agenda Lesson Plan

  • Smuggling a bonus fact with your voice
  • Two sentences, two truths
  • What follows “by the way”?

translate Key Vocabulary

by the wayextraenrichoptionalcrucialmentionpauseclausebracketsidentity

auto_fix_high Grammar Points

  • Non-defining clauses sit between commas and add optional information about an already-identified noun
  • That is impossible in non-defining clauses, and the pronoun can never be dropped
  • Commas change truth: The students, who finished early, left = all of them left; without commas = only those who finished early
  • Sentence-comment which: …, which + comment refers to the whole previous clause, not a single noun
  • In speech each comma is realised as a small pitch drop and pause around the bonus information

arrow_upward Prerequisites

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