Evidentiality and nuanced modality in English C2
Signal how you know something—observation, report or inference—and calibrate certainty with seem, appear, reportedly, be bound to and related forms.
Mark the source of a claim.
Separate evidential source from degree of certainty.
Select neutral, cautious or firm forms that match the writer’s responsibility.
Source and certainty are separate dimensions
Reportedly marks indirect sourcing but does not guarantee reliability. Must have expresses a strong inference but does not name the source. A precise writer controls both dimensions independently.
Ask first where the information comes from; then ask how strongly that evidence supports the proposition.
Appearance, report and inference
Seem and appear point to indications; be said or reported attributes a claim; must and can’t have express logical inference. Apparently and evidently can shift meaning with context, so concrete evidence should accompany them.
The same event can therefore be framed differently without becoming synonymous.
| Reading | Form |
|---|---|
| observable indication | appears to |
| external source | is reported to |
| logical conclusion | must have |
Fine-grained commitment
Be bound to expresses a very strong expectation. May well presents a possibility the speaker considers reasonably supported. Would seem to combines inference with deliberate distance.
Select the form that corresponds to the risk of error and the communicative consequences of being wrong.
Responsible attribution
Evidential grammar helps readers distinguish knowledge from hearsay, prediction and interpretation. It should make accountability clearer, not blur it.
Whenever possible, pair indirect wording with a named report, observable sign or explicit reasoning chain.