In order to maintain parallelism, when is it required to repeat prepositions? For example, in the pattern sentence "in A and B", is it ever required to say "in A and in B"? Or "by A and by B"?
For example,
"I'm interested in chemistry, which I like very much, and philosophy, which I don't know much about"
Do I need to use "in philosophy" for clarity? Same question applies to prepositions by and with.
I got confused after looking at this question from GMACPrep1:
"Reptiles, by drawing their body heat directly from the Sun rather than burning calories to generate it, can survive on ten percent of the nourishment that a mammal of similar size would normally require"
This sentence is correct, according to GMAC. I don't quite understand why there is no need to say "rather than by burning ..."
What confuses me more is that the preposition to is optional in a list of infinitives. For example, to A, B, and C or to A, to B, and to C.
For example,
"I'm interested in chemistry, which I like very much, and philosophy, which I don't know much about"
Do I need to use "in philosophy" for clarity? Same question applies to prepositions by and with.
I got confused after looking at this question from GMACPrep1:
"Reptiles, by drawing their body heat directly from the Sun rather than burning calories to generate it, can survive on ten percent of the nourishment that a mammal of similar size would normally require"
This sentence is correct, according to GMAC. I don't quite understand why there is no need to say "rather than by burning ..."
What confuses me more is that the preposition to is optional in a list of infinitives. For example, to A, B, and C or to A, to B, and to C.
