I know that we can use a sentence in Present Progressive Passive form like this :
Active : The postman is delivering the mail. Passive: The mail is being delivered by the postman.
But I just wondering why in some passive sentences we use being without "to be" !!!
My question are : A) Where is "am is are was were" ? B) What's the structure of these sentences ? ( I'm totally confused, maybe there is an structure of forming these sentences that I don't know)
For example in these sentences I can't find "To Be" :
1) She basically keeps Riley from being poisoned, physically and socially.
2) Bing Bong (He) being dragged far off to the dark.
3) Riley sitting up in bed after being scared awake.
4) Joy and Sadness hear the sound of a new memory being produced.