Lesson 40: Combining Subjects with Are

Primary Language Lessons • Instructional Guide Teacher Answer Key

Curriculum Focus & Learning Objectives

• Compound Subject Formation: Coordinating two singular subjects with and, creating a plural compound subject.

• Subject-Verb Agreement Shift: Transforming the singular linking verb is to plural are when subjects are compounded.

#	Given Prompts	Standard Model Answer	Instructional & Grammar Notes
1.	The apple is round. / The orange is round.	The apple and the orange are round.	Acceptable: The apple and orange are round. Crucial shift from is to are.
2.	Iron is heavy. / Gold is heavy.	Iron and gold are heavy.	Mass nouns compounded: Iron and gold are heavy. No articles required.
3.	The dog is playful. / The cat is playful.	The dog and the cat are playful.	Plural verb agreement with common animals: are playful.
4.	Sugar is sweet. / Honey is sweet.	Sugar and honey are sweet.	Substances/foods compounded: Sugar and honey are sweet.
5.	The sun is bright. / The star is bright.	The sun and the star are bright.	Singular astronomical nouns compounded with plural verb: are bright.

Contrast with Lessons 37-39

Contrast clearly for the class: In Lesson 37, one subject had two qualities (The lemon is yellow and sour - verb remains is). In Lesson 40, two subjects share one quality, so the verb MUST change to are.

Common Error Prevention

Young learners often mistakenly write "The apple and orange is round". Have the class repeat aloud: One is round. Two are round.

Evaluation Metric	Target Standard (Exemplary)	Common Correction Points
Subject-Verb Agreement	Correctly uses plural verb are with compound subject.	Deduct if student keeps singular is.
Compound Subject	Both naming words joined cleanly with and.	Ensure both subjects are included in the sentence.
Mechanics	Initial letter capitalized; ends with period (.).	Check for missing periods.
Spelling	Correct spelling of subjects and adjectives (orange, heavy, playful, sweet).	Check spelling of honey, sugar, orange.

Lesson 40: Combining Subjects with "Are" — Answer Key & Guide