... from the grammar (that is) being examined. <passive>Being is a present participle.
... from the grammar (that) they are examining. <active>
Unusual meanings distract the reviewer from the grammar being examined.
I think, in this sentence, that "being" is a gerund and "examine" is an adjective.
Am I right?
... from the grammar (that is) being examined. <passive>Being is a present participle.
... from the grammar (that) they are examining. <active>