Simultaneous Actions

Question 1

What is the sentence structure for performing an action while doing something else?

Answer 1

(secondary action verb stem) ながら(main action)

Question 2

I eat my meal while looking at my phone

Answer 2

けいたいを見ながらごはんを食べます。

Question 3

My sister and I watch a movie while eating popcorn.

Answer 3

私といもうとはポップコーンを食べながら、えいがを見ます