[separating oil from sand] takes three times as much [energy] as [pumping conventional oil.]

Question

Hi everybody,I saw the following sentence in an article.    [separating oil from sand] takes three times as much       [energy] as [pumping conventional oil.]shouldn't it be like :separating oil from sand takes three times as much energy as pumping conventional oil (takes).two sides of comparison must be parallel.  and without takes they are not. are they?Thanks

Avangi · Accepted Answer

You're right, I'm sure, but I can't imagine anyone saying it that way.

LifeLongLearner10 · Answer

AvangiYou're right, I'm sure, but I can't imagine anyone saying it that way.

So it will be OK not to mention the second takes? (the source was scientifict paper)

Avangi · Answer

I'd recommend adding the "takes" only if you're taking a grammar test. It sounds quite awkward to my ear. (A few people might say " - - as pumping conventional oil does.")

[separating oil from sand] takes three times as much [energy] as [pumping conventional oil.]

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