Would you please explain gramatically?
Q1. "Surprisingly, birds have an internal compass to tell/telling them
which direction they are headed."
Are both "to tell" and "telling" correct here? If not, why? Please explain gramatically.
Q2. Visitors to leave/leaving the building are reminded to return their pass..."
Are both "to leave" and "leaving" correct here? If not, why? Please explain gramatically.
Top answer
" Both are ok, but the present participle is better. It describes what the "internal compass" is doing when the bird is flying. The to-infinitive only states the function or purpose of the "internal compass" in the avian species.
- " Both are ok, but the present participle is better.
- It describes what the "internal compass" is doing when the bird is flying.
- The to-infinitive only states the function or purpose of the "internal compass" in the avian species.
- g.
- Animals have a heart to pump blood through the body .
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thanks3Surprisingly, birds have an internal compass to tell/telling them which direction they are headed."
Both are ok, but the present participle is better.
It describes what the "internal compass" is doing when the bird is flying.
The to-infinitive only states the function or purpose of the "internal compass" in the avian species.
e.g.
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