Includes appendices, glossary of grammatical terms and index.

"Grammar Explorer prepares students for academic success through captivating National Geographic content and assignments that mirror the requirements of academic life. Going beyond clear grammar charts and instruction, Grammar Explorer challenges students to think critically while using grammar in their listening, speaking, reading, and writing." (Publisher's Website)

CONTENTS

Inside a Unit

Unit 1 - CUSTOMS AND TRADITIONS (The Present)

Lesson 1: Simple Present: Statements and Questions
Reading: An Afar Wedding

1.1 Simple Present: Affirmative and Negative Statements

1.2 Simple Present: Questions and Answers

1.3 Frequency Adverbs with the Simple Present

Lesson 2: Present Progressive and Simple Present
Reading: Diwali

1.4 Present Progressive: Affirmative and Negative Statements

1.5 Present Progressive: Questions and Answers

1.6 Action and Non-Action Verbs

Review the Grammar

Connect the Grammar to Writing: Write about a Tradition

Unit 2 - SURVIVAL (The Past)

Lesson 1: Simple Past
Reading: The Lion Guardians Project, Kenya

2.1 Simple Past: Affirmative and Negative Statements

2.2 Simple Past: Questions and Answers

Lesson 2: Past Progressive and Simple Past
Reading: Community Radio in Guatemala

2.3 Past Progressive: Affirmative and Negative Statements

2.4 Past Progressive: Questions and Answers

Lesson 3: Past Time Clauses
Reading: Surviving an Avalanche

2.5 Past Time Clauses with When and While

2.6 Past Time Clauses with When: Events in Sequence

Lesson 4: Repeated Past Actions: Used To and Would
Reading: Who Owns the Past?

2.7 Used To: Affirmative and Negative Statements

2.8 Used To: Questions and Answers

2.9 Would: Repeated Past Actions

Review the Grammar

Connect the Grammar to Writing: Write about a Difficult Experience

Unit 3 - HEALTH AND FITNESS (Nouns)

Lesson 1: Plural and Possessive Nouns — Another and Other
Reading: Sangomas of Southern Africa

3.1 Spelling Rules for Regular and Irregular Plural Nouns

3.2 Possessive Nouns

3.3 Another and Other

Lesson 2: Count and Non-Count Nouns

Reading: Superfoods

3.4 Count Nouns and Non-Count Nouns

3.5 More Non-Count Nouns

Lesson 3: Quantity and Measurement Words
Reading: The Science of Sports

3.6 Quantity Words with Count and Non-Count Nouns

3.7 Measurement Words with Non-Count Nouns

Review the Grammar

Connect the Grammar to Writing: Write Opinion Paragraphs

Unit 4 - GOING PLACES (Pronouns, Prepositions, and Articles)

Lesson 1: Personal Pronouns and Possessive Adjectives
Reading: Getting Around Mexico City

4.1 Subject and Object Pronouns

4.2 Possessive Adjectives and Pronouns

4.3 Reflexive Pronouns

Lesson 2: Prepositions of Time, Place, and Direction
Reading: Diving in the Bahamas

4.4 Prepositions of Time

4.5 Prepositions of Place and Direction

Lesson 3: Articles
Reading: Andrew Skurka's Alaska-Yukon Expedition

4.6 Indefinite and Definite Articles

4.7 Generalizations vs. Specific References

Lesson 4: Articles with Place Names
Reading: Greg's and Maya's Travel Blogs

4.8 The and No Article: Geographic Names

4.9 Other Uses of The and No Article with Place Names

Review the Grammar

Connect the Grammar to Writing: Write about a Place

Unit 5 - A CHANGING WORLD (The Present Perfect)

Lesson 1: Present Perfect: Statements and Questions
Reading: Asia's Aral Sea

5.1 Present Perfect: Statements

5.2 Present Perfect: Questions and Answers

5.3 Using Adverbs with the Present Perfect

Lesson 2: Present Perfect with For and Since
Reading: Paro, the Robot Seal

5.4 Present Perfect with For and Since

5.5 Present Perfect: Past Time Clauses with Since

Lesson 3: Present Perfect and Simple Past
Reading: The Composites

5.6 Present Perfect and Simple Past: Indefinite or Definite Past Time

5.7 Present Perfect and Simple Past: Incomplete or Complete Time

Lesson 4: Present Perfect Progressive
Reading: Good Times and Bad Times for the Inuit

5.8 Present Perfect Progressive: Statements

5.9 Present Perfect Progressive: Questions and Answers

5.10 Present Perfect Progressive and Present Perfect

Review the Grammar

Connect the Grammar to Writing: Write about Changes

Unit 6 - APPEARANCES AND BEHAVIOR (Adjectives and Adverbs)

Lesson 1: Adjectives
Reading: Koalas Fight Back!

6.1 Adjectives

6.2 Nouns as Adjectives

6.3 Word Order of Adjectives

Lesson 2: Adverbs
Reading: Moko - The Art of Maori Tattoos

6.4 Adverbs of Manner

6.5 Adverbs of Degree

Review the Grammar

Connect the Grammar to Writing: Write a Description of an Animal

Unit 7 - TOMORROW AND BEYOND (The Future)

Lesson 1: Future with Will and Be Going To
Reading: A Star-Studded Trip You'll Never Forget

7.1 Future with Will

7.2 Future with Be Going To

Lesson 2: Using Present Forms to Express the Future
Reading: The Future of Work

7.3 Simple Present: Future Schedules

7.4 Present Progressive for Future Plans

Lesson 3: Comparison of Future Forms — Future Time Clauses
Reading: Fatima's Blog: Ocean News and Views

7.5 Comparison of Future Forms

7.6 Future Time Clauses with After, As Soon As, When, Before

Review the Grammar

Connect the Grammar to Writing: Write about the Future

Unit 8 - CONSUMER SOCIETY (Comparatives and Superlatives)

Lesson 1: Comparative Adjectives and Adverbs
Reading: What is a Consumer Society?

8.1 Comparative Adjectives

8.2 Comparative Adverbs

8.3 Completing Comparisons

Lesson 2: Comparisons with (Not) As ... As and Less
Reading: Online Reviews: * or ****?

8.4 Comparisons with As ... As

8.5 Comparisons with Less and Not As ... As

Lesson 3: Superlative Adjectives and Adverbs
Reading: Mount Everest: The Highest Garbage Dump in the World?

8.6 Superlative Adjectives and Adverbs

8.7 More on Superlative Adjectives and Adverbs

Review the Grammar

Connect the Grammar to Writing: Write a Product Review

Unit 9 - THE NATURAL WORLD (Conjunctions and Adverb Clauses)

Lesson 1: Conjunctions
Reading: What's for Dinner?

9.1 Conjunctions: And, Or, So, But

9.2 And + Too, So, Either, Neither

Lesson 2: Adverb Clauses: Cause and Contrast
Reading: Volcano Watching

9.3 Adverb Clauses: Cause

9.4 Adverb Clauses: Contrast

Lesson 3: Adverb Clauses: Future Conditional
Reading: The Sounds of the Sea

9.5 Adverb Clauses: Future Conditional

9.6 Adverb Clauses: If and When

Review the Grammar

Connect the Grammar to Writing: Write about Causes and Effects

Unit 10 - WORK AND PLAY (Gerunds and Infinitives)

Lesson 1: Gerunds
Reading: Jason deCaires Taylor

10.1 Gerunds as Subjects and Objects

10.2 Gerunds as the Object of a Preposition

Lesson 2: Infinitives — Infinitives and Gerunds
Reading: Online Reviews: The World's Highest Skydive

10.3 Verb + Infinitive

10.4 Verb + Object + Infinitive

10.5 Verb + Gerund or Infinitive

Lesson 3: More Uses of Infinitives
Reading: Tiny Creatures in a Big Ocean

10.6 Infinitives of Purpose

10.7 Too + Infinitive

10.8 Enough + Infinitive

Review the Grammar

Connect the Grammar to Writing: Write a Biography

Unit 11 - PEOPLE AND PLACES (Relative Clauses)

Lesson 1: Subject Relative Clauses
Reading: Petra and the Bedul Bedouin

11.1 Subject Relative Clauses

11.2 Subject Relative Clauses: Verb Agreement

Lesson 2: Object Relative Clauses
Reading: Lek Chailert and the Elephant Nature Park

11.3 Object Relative Clauses

11.4 Object Relative Clauses without Relative Pronouns

Lesson 3: Relative Clauses with Prepositions and with Whose
Reading: Cycling and the Isle of Man

11.5 Object Relative Clauses with Prepositions

11.6 Relative Clauses with Whose

Review the Grammar

Connect the Grammar to Writing: Write a Classification Essay

Unit 12 - ART AND MUSIC (Modals: Part 1)

Lesson 1: Ability: Past, Present and Future
Reading: The Art of Trash

12.1 Ability: Can and Could

12.2 Ability: Be Able To

12.3 Past Ability: Could and Was/Were Able To

Lesson 2: Possibility and Logical Conclusions
Reading: Old Meets New in Argentinian Music

12.4 Possibility: May, Might, and Could

12.5 Logical Conclusions: Must and Must Not

Lesson 3: Permission and Requests
Reading: After the Show

12.6 Permission: May, Could, and Can

12.7 Requests: Would, Could, Can, Will

Review the Grammar

Connect the Grammar to Writing: Write a Review

Unit 13 - SPORTS (Modals: Part 2)

Lesson 1: Necessity and Prohibition
Reading: I'm a Female Judo Player: Ask Me Anything!

13.1 Necessity: Must and Have To

13.2 Prohibition (Must Not, May Not, Can't, Couldn't) and Lack of Necessity (Not Have To)

Lesson 2: Advisability and Expectation
Reading: Man versus Horse

13.3 Advisability: Should and Ought To

13.4 Expectations: Be Supposed To

Review the Grammar

Connect the Grammar to Writing: Write an Opinion

Unit 14 - INNOVATIONS (Verbs)

Lesson 1: Transitive and Intransitive Verbs
Reading: Cars without Drivers

14.1 Transitive and Intransitive Verbs

14.2 Direct and Indirect Objects with To and For

14.3 Direct and Indirect Objects: Word Order with To and For

Lesson 2: Phrasal Verbs
Reading: Podcast 23 - Innovations: Wearable EEGs

14.4 Phrasal Verbs

14.5 Transitive and Intransitive Phrasal Verbs

14.6 Transitive Phrasal Verbs: Separable and Inseparable

Review the Grammar

Connect the Grammar to Writing: Write about an Innovative Product

Unit 15 - WINDOW ON THE PAST (Passive Voice and Participial Adjectives)

Lesson 1: Passive Voice
Reading: The Moche of Northern Peru

15.1 Active and Passive Voice

15.2 Passive Voice: Present, Past, and Future Forms

Lesson 2: Passive Voice with Modals — Using the By Phrase
Reading: A Treasure Ship Tells Its Story: The SS Republic

15.3 Passive Voice with Modals

15.4 Using the By Phrase

Lesson 3: Participial Adjectives
Reading: What's New in Ancient Rome

15.5 Past Participial Adjectives

15.6 Present Participial Adjectives

Review the Grammar

Connect the Grammar to Writing: Write about an Important Memory

Unit 16 - EXPLORATION (Noun Clauses and Reported Speech)

Lesson 1: Noun Clauses with That
Reading: Discovering a Lost City

16.1 Noun Clauses with That

16.2 Noun Clauses with That: More Expressions

Lesson 2: Noun Clauses with Wh-Words and If/Whether
Reading: The Voyage of the Kon-Tiki

16.3 Noun Clauses with Wh-Words

16.4 Noun clauses with If/Whether

Lesson 3: Quoted and Reported Speech
Reading: Is Space Exploration Still a Good Idea?

16.5 Quoted Speech

16.6 Reported Speech

16.7 Reporting Verbs

Review the Grammar

Connect the Grammar to Writing: Write about a Journey

Appendices

Glossary of Grammar Terms

Index