[Grammar] Is this an adverb?

1. The dog runs quickly.
2. The dog runs fast.

In the first sentence, quickly is the adverb, but in the second sentence, is fast also an adverb?

Thanks.

leke said:

1. The dog runs quickly.
2. The dog runs fast.

In the first sentence, quickly is the adverb, but in the second sentence, is fast also an adverb?

Thanks.

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***** NOT A TEACHER *****


Leke,


(1) You have asked a great question.

(2) It seems that in English, the part of speech often depends on

how it is used in a particular sentence.

How does the dog run? It runs fast.

Therefore, it is an adverb that modifies the verb.

What kind of dog is it? It is a fast dog.

Therefore, it is an adjective that modifies the noun.

I eat too fast. (adverb)

Do you like fast food? (adjective)

(3) More examples:

Martha works hard. / Martha's science class is hard. / Martha has a

hard science class. (The first "hard" is an adverb, and the others are

adjectives.)

Strictly speaking, the dog doesn't run fast, it runs quickly. It is, however, a fast dog.

I feel sure it's also an adverb as Parser suggests:

fast, adv. : Oxford English Dictionary

konungursvia said:

I feel sure it's also an adverb as Parser suggests:

fast, adv. : Oxford English Dictionary

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Yes, it is listed as an adverb.

bhaisahab said:

Strictly speaking, the dog doesn't run fast, it runs quickly. It is, however, a fast dog.

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***** NOT A TEACHER *****


(1) The moderator is, indeed, correct that the two words are not always

interchangeable.

(2) I suddently remembered the following:

I ran quickly. = correct.

I ran fast. = correct.

I quickly ran. = correct.

I fast ran. = BAD!!!

(3) Descriptive English Grammar by Professors House and Harman

states:

Several of the flat adverbs [those adverbs that do NOT end in -ly]

do not immediately proceed the verbs they quality [modify].

There are times when one of these two words is more appropriate than the other, for example: You are driving too fast [STRIKE]quickly[/STRIKE]. However, in some situations it appears to be a matter of personal choice. bhaisahab feels that a dog runs quickly; the OALD gives as an example, How fast can a cheetah run? I would use fast of a dog running, but I don't believe that quickly is wrong here.