🧑‍🏫 For Teachers

Set a 12-minute timer and let students explore the 4 rule cards independently.

Check answers together by having students read aloud the full sentences with clear pauses for commas.

🎓 For Learners

Read each rule pattern and notice where the commas sit.

Complete the 12 practice tasks below and check your commas and small words carefully.

As predicted / As expected

Use this pattern when the real result matches what people thought would happen. We always say as expected. Never say like expected.

• As predicted, the test room stayed cool for a week.

• The proton beam hit the target, as expected.

As is often the case

This group of words is fixed and never changes. Always keep the word is, even with plural ideas. Never add it to this phrase.

• The budget, as is often the case, was larger than planned.

• The accelerator magnets failed on day one, as is often the case.

Sentence Position & Commas

You can put the comment at the start, in the middle after the subject, or at the end. Always place commas around it so the main sentence stays smooth.

• The second run took longer than planned, as we feared.

• The new instrument, as we hoped, detected the signal without trouble.

As far as we know / As has been shown / As it turned out

Each phrase keeps its exact words and tense. One shows limited knowledge, one points to earlier evidence, and one reports a past surprise.

• As far as we know, nobody has repeated the result yet.

• As has been shown in the latest dataset, every electron behaved normally.