grammer

Question

which one is correct ? why ?

1.A jet plane is not as efficient at low speeds as A propeller-driven plane .
2.A jet plane is not as efficient as A propeller-driven plane at low speeds .

Answer 1

second one is correct i think

Comments

why so?

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I need reason !

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تا اونجا که من میدونم عنصری که قراره مقایسه بشه باید بین as ها قرار  بگیره

Answer 2

both are grammatically correct

Answer 3

Both of them are right. Reason= at low speeds is an adverb, adjectives can often be followed by an adverb so the 1st is right. adverbs can be placed at the end of a sentence as in the 2nd sentence.