Question

1. Fogg and Passepartout go to Allahabad by elephant.

2. Fogg and Passepartout go to Allahabad by the elephant.

3. Fogg and Passepartout go to Allahabad on an elephant.

4. Fogg and Passepartout go to Allahabad on the elephant.
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Which one is grammatical?

Answer 1

All are grammatical except for 1.

Answer 2

Using "the" suggests the elephant is a specific elephant already identified. "An" elephant is a single elephant, but not one in particular. "On" and "by" mean much the same thing. 1 and 3 are best, unless the elephant has already been identified by name or some other specific way.

Answer 3

Ms. Sue and I disagree on #1. ????

Answer 4

I made a mistake. 1 is grammatical. Thanks for catching this, Reed.