in this sentence - Grandma has just made chocolate chip cookies, what part of speech is the word "just"??

The word "just" in the sentence "Grandma has just made chocolate chip cookies" is an adverb. It is used to emphasize the recent completion of the action, indicating that Grandma made the cookies only a short time ago. To identify the part of speech of a word, you can follow these steps:

1. Read the sentence and identify the word you want to analyze ("just" in this case).
2. Understand the function of the word in the sentence. In this case, "just" is modifying the verb "made" and providing additional information about when the action occurred.
3. Consult a dictionary or reliable grammar resource if you're unsure about the word's part of speech. In this case, referring to a dictionary would confirm that "just" can be used as an adverb to indicate an action occurring recently.

"just" tells when - was made.

Was made is the verb, so just is an adverb.

Adverbs tell when, where, why and how the verb behaves.