Which word should I chose in the following sentence:

One day, I decided to make a real/really fine dinner for my family.

You should use really fine

You should choose REALLY.

It modifies the adjective "fine," so it must be the adverb -- "really."

To determine whether to use "real" or "really" in the sentence, we need to understand the purpose and function of each word.

1. "Real" is an adjective that means something is genuine, actual, or not artificial.
2. "Really" is an adverb that means something is done to a great extent or truly.

In the context of the sentence, both words can be grammatically correct, but the meaning of the sentence may differ slightly depending on the chosen word.

If you want to emphasize that the dinner was genuine, actual, or not artificial, then you should use the word "real." For example:

"One day, I decided to make a real fine dinner for my family."

On the other hand, if you want to emphasize that the dinner was done to a great extent or truly exceptional, then you should use the word "really." For example:

"One day, I decided to make a really fine dinner for my family."

So, the choice between "real" and "really" depends on whether you want to emphasize the authenticity of the dinner or the extent of its excellence.