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“I have to” vs. “I must”

Which of these is correct?

The camera have to be moved sideways instead of rotate to track the scene.

or

The camera must be moved sideways instead of rotate to track the scene.

or

The camera must move sideways instead of rotate to track the scene.

Should these read “instead of rotate” or "instead of rotation"?

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marked as duplicate by FumbleFingers, jwpat7, waiwai933 Jun 19 '12 at 5:33

This question has been asked before and already has an answer. If those answers do not fully address your question, please ask a new question.

1 Answer

up vote 1 down vote accepted

If you only concentrate on the first part of the sentences, the second and third examples are correct, although the second sounds more natural to my ear. The first example would be correct if you changed it to "The camera has to be moved..."

The second half of the sentences is on the contrary not correct. In the first two examples you could change it to "... instead of being rotated", whereas in the final example would be correct if it read "...instead of rotating to track the scene".

As for the differences in meaning, check the question previously asked which Carlo_R has linked.

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