Quote:
Per GMAT rules, doesn't "a heavy psychological burden" refer to the subject of preceding clause (children of illegal immigrants) or can it be used as an appositive modifier to refer to "keep their status secret"? Also, is there a way to tell the difference between the usage of two (regular modifier and appositive modifier) or is context paramount here?
Dear Sharang,
May I know which GMAT rules are you meaning? What we know is that adjectival modifiers modify the subject. That holds good for present participles placed at the beginning of the sentence and set off by a comma from the subject. Present participles following a noun in the middle of the sentence but not set off by a comma also modify the noun prior to that but not necessarily a subject, because we don't expect to find a subject in the middle or end part of a sentence.
The appositive is another noun, which is a description of another noun or some precise theme. The appositive may be placed either before or after the modifyee noun.
Quote:
Many children of illegal immigrants grow up having to keep their status a secret, heavy psychological burden.
Here, a psychological heavy burden is an appositive that modifies the theme of having to keep their status a secret. The phrase' having to keep their status a secret is a gerund (in effect a noun) acting as an object noun of the verb grow up.
In sum, whether something is an appositive or not can be seen from the distinct fact that it is a noun.
I think there is no need to call the modifiers as either regular or appositive. All of them are simply modifiers.
Whether they are context - based or not is also not clear. After all, modifiers are only additional to the mainframe and are dispensable. We use them when they can shed more light. Otherwise, we may ignore them. In that sense, maybe they are context based.