Adverbs of certainty and where they go
Windmills and watermills
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Adverbs of certainty and where they go
Learn how to express certainty clearly and place adverbs in the correct sentence positions.
💡 How to use this lesson
For Teachers
Assign this 12-minute lesson for self-study or warm-up; check answers using the automated key.
Focus student attention on adverb positions relative to main verbs and negatives.
For Learners
Read the 4 quick rules and examples carefully first.
Then complete the 12 practice items step by step.
Historical windmills and watermills feature throughout our examples and practice questions.
Grammar Rules & Patterns
Study the 4 essential rules of adverb position and strength before attempting the exercises.
Adverb Strength & Meaning
Definitely and certainly mean that you are sure. Probably means that you are quite sure, and possibly means that you are not sure. We use them to show how sure we are that something is true or will happen.
Position with Present & Past Simple Verbs
With a verb in the present simple or past simple, put the adverb before the main verb. We never put the adverb after the main verb or after its object.
Position with Auxiliary Verbs & Negatives
With am, is, are, was, were and with will, put the adverb after the verb. With a negative like won't, put the adverb before it.
Starting Sentences with Maybe & Perhaps
Maybe and perhaps mean not sure and usually start the sentence. We do not put maybe between the subject and the verb.
⚡ Quick Check: Do vs Avoid
✅ Correct Usage
- The neglected windmill probably won't rotate.
- Maybe the owner will sell it.
- They definitely grind barley here.
⚠️ Common Mistakes to Avoid
- The neglected windmill won't probably rotate.
- The owner maybe will sell it.
- They grind barley definitely here.
Practice Exercises
Complete the 12 items below. Pay attention to the clue in brackets for each speaker's certainty level!
Part 1 Choose the Correct Sentence
Select the sentence that shows you are sure:
Select the sentence that shows you are quite sure:
Select the sentence with the correct placement of 'maybe':
Part 2 Rewrite the Sentence
Rewrite the sentence by placing certainly in the correct position:
"The watermill rotates fast."
Rewrite the sentence by placing probably in the correct position:
"The old roof crumbled last winter."
Rewrite the sentence by placing possibly in the correct position:
"The giant millstone will break."
Part 3 Fill in the Gaps
Complete the sentence with the correct option:
"The miller _____ turns the heavy wheel every morning."
Complete the sentence with the correct option:
"The barley stored in the mill _____ fresh."
Complete the sentence with the correct option:
"_____ the miller will sell the extra grain at the market."
Part 4 Correct the Error in a Message
Read this message to a friend containing an error:
Which option fixes the mistake correctly?
Read this message to a friend containing an error:
Which option fixes the mistake correctly?
Read this message to a friend containing an error:
Which option fixes the mistake correctly?
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