[Grammar] Confusion about adverbs

[Madiha]

My grade 3 student reached out to me regarding her confusion about adverbs and verbs in a passage.

I guided and helped her but this particular sentence is confusing me

They look like a strange mix of a beaver and a duck! They waddle when walking on land but when they are under water they swim gracefully

walking is a verb here but am I right in considering waddle as an adverb? or it's also a verb in this sentence?

 

[jutfrank]

It's a verb.

 

[5jj]

https://www.macmillandictionary.com/dictionary/american/waddle

 

[Rover_KE]

Welcome to the forum, Madiha. :-D

My grade 3 student reached out to me ...

If you're an English teacher, please amend your profile to say so.

How old are grade 3 students in Pakistan?