I was walking and listening to music
Is it correct or should I say:
I was walking and was listening to music
I was walking and I was listening to music
And which one of the above is not correct
Numbers 1 & 3 are correct, number 2 is not used.
By the way, was is not a modal verb.
To be and to have are auxiliary verbs. They simply support the main verb when it's in participle form (seeing and seen for example).
Modal verbs are must, may, can, will, shall, may, could, would, should. These indicate attitude of some kind.
You're welcome, Miriam. Keep up the good work!
Hi Miriam, you can just say "I was walking, listening to music."