B1 Grammar

B1 · GRAMMAR

The grammar of stories, opinions, and longer conversations.

In this section

Step 1: Subject-verb agreement

Step 2: Present perfect tense

Step 3: Active vs Passive voice

Step 4: If I were vs If I was

B1 Grammar
What’s the Plural of Fungus: Understanding the Correct Form
ByKhamis Maiouf 16 January 202415 September 2026
Explore the singular and plural uses of “fungus”.
Start lesson: What’s the Plural of Fungus: Understanding the Correct Form
B1 Grammar
What’s the Plural of Matrix: Understanding Singular and Plural Forms
ByKhamis Maiouf 20 January 202415 September 2026
Explore the singular and plural uses of “matrix”.
Start lesson: What’s the Plural of Matrix: Understanding Singular and Plural Forms
B1 Grammar
Tableaux or Tableaus? The Plural of Tableau
ByKhamis Maiouf 23 January 202415 September 2026
Explore the singular and plural uses of “tableau”.
Start lesson: Tableaux or Tableaus? The Plural of Tableau