Mastering All and All Of: Complete Grammar Guide with Interactive Practice
Mastering "All" and "All Of"
Complete Grammar Guide with Interactive Practice
Understanding the Difference
The words "all" and "all of" might seem interchangeable, but they follow specific grammar rules that can make your English sound more natural and precise. Understanding when to use each form will elevate your speaking and writing skills significantly.
💡 Quick Tip:
While both forms are often correct, choosing the right one depends on what follows: determiners, pronouns, or direct nouns.
📖 Essential Grammar Rules
✅ Use "All Of"
- • Before pronouns: all of us, all of them
- • Before determiners: all of the books, all of my friends
- • Before proper nouns: all of London, all of Europe
✅ Use "All"
- • Before plural nouns: all students, all cars
- • Before uncountable nouns: all water, all information
- • In time expressions: all day, all week
🧩 Interactive Practice Quiz
Choose the correct option to complete the sentence:
_______ students passed the exam.
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💡 Real-World Examples
✅ Correct Usage
All of my colleagues attended the meeting.
Uses "all of" before determiner "my"
All students must submit their assignments.
Uses "all" before plural noun
All of us enjoyed the concert.
Uses "all of" before pronoun "us"
❌ Common Mistakes
All of students passed the test.
Should be "All students"
All us went to the party.
Should be "All of us"
All of water is essential.
Should be "All water"
✏️ Fill in the Blanks Practice
Complete each sentence with either "all" or "all of". Click on your choice to see if you're correct!
Practice Score: 0/6
🎓 Key Takeaways
Remember the Pattern
"All of" comes before pronouns and determiners, while "all" comes before direct nouns.
Practice Makes Perfect
Regular practice with these structures will make them feel natural in your speech and writing.
Context Matters
Pay attention to what follows "all" to determine whether you need "of" or not.
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