It can be. It depends how it is used in the sentence.
No. Nervous is an adjective. The adverb form is nervously.
Yes, surprisingly is an adverb, a word that modifies a verb; for example: I was very nervous but the performance surprisingly wentsmoothly.
nervous
nerve
No, it's a adjective.
She was nervous knowing she had to rappel down the mountain, but she was confident in her training. The word rappel can be used as a noun or a verb.
"Nervous" is an adjective that describes a feeling of worry or anxiety.
The word nervous is an adjective. It means to be apprehensive or anxious.
Jittery is not a verb but an adjective. Jittery means to feel shaky, nervous, or upset.
the word were is a LINKING VERB.
The word 'be' is indeed a verb.
Yes, the word 'do' is a verb.