zoezhuyan wrote:
hi Mike, how are you? I have some question need your explanation
1/
I emerged this thread, because I am sunk in absolute phrase and appositive phrase.
I read some books and blogs, but I failed to distinguish these two,
genuinely want your help,
2/
further more, should absolute phrase reveal simultaneity with the main clause ?
3/
I have a SC on hand,
OG 16 , SC #84
Unlike the original National Museum of Science and Technology in Italy, where the models are encased in glass or operated only by staff members, the Virtual Leonardo Project, an online version of the museum, encourages visitors to “touch” each
exhibit, which thereby activates the animated functions of the piece.
(A) exhibit, which thereby activates
(B) exhibit, in turn an activation of
(C) exhibit, and it will activate
(D) exhibit and thereby activate
(E) exhibit which, as a result, activates
I picked up B mistakenly because I viewed B as absolute phrase, which consists of a noun
an activation and it prep modifier
of the animated function of the piece, moreover, which explains the effect of the "
touch"
I haven't got yet why B is not absolute phrase , please help...
have a nice day
>_~
Dear
zoezhuyan,
My friend, how are you?

I am happy to help you!
Appositive phrases and absolute phrases are very different. An appositive phrase is a noun-modifier: it is designed to provide information or clarification about a specific noun, most often the noun that it is touching.
...
my friend Chris ...
...
geometry,
my favorite subject, ...
...
Uzbekistan,
a country in central Asia, ...
The underlined words are examples of appositive phrases. These are very common. I would estimate that probably about 50% of the SC sentences in the
OG have some kind of appositive phrase. It would be hard to find a news article that didn't have at least a few appositive phrases in it. See
GMAT Grammar: Appositive PhrasesBy contrast, absolute phrases are quite rare and appear only in highly sophisticated writing. I believe we can count on one hand the number of absolute phrases in the SC sentences in the
OG. These are NOT noun-modifiers. These modify the entire sentence, often giving a simultaneous condition, cause, or explanation. The action of an absolute phrase is most often at the same time as the action of the sentence, unless a perfect participle is used: the perfect participle ("
having" + [past participle]) indicates previous action.
This is a tricky thing. The "formula" for an absolute phrase, [noun] + [noun modifier], has to be understood correctly. Some noun modifiers are designed to attach directly to the noun, such as prepositional phrases, and these do not work to make an absolute phrase. A [noun] + [prepositional phrases} will NEVER be an absolutely phrase. I believe that every absolute phrase I have seen on official questions has been of the form [noun] + [participial phrase]. The noun is most often another actor, an actor different from the main subject, an actor who performs an action separate from the main action.
Example:
McClelland having defeated Lee at Antietam, the British and the French decided against giving diplomatic recognition to the US Confederacy.
That's an example of an absolute phrase using a perfect participle, "
having defeated." The perfect participle indicates that the action of the absolute phrase, the defeat at Antietam, preceded the action of the main clause. The actor and action of the absolute clause, McClellan's defeat of Lee, is separate from the actor & action of the main clause on the other side of the Atlantic. See more here:
Absolute Phrases on the GMATMy friend, I will give you rules:
1) you are not allowed even to think of "absolute phrases" unless you see the [noun] + [participle] construction. The noun has to be free-standing, not the object of a preposition.
2) action of the absolute clause must be different from the action of the main clause, and must provide some kind of explanation or justification
You are enthusiastic about learning this idea and understanding it, and that's great, but that doesn't give you the right to find absolute phrases everywhere, because these are very very rare. We can find appositive phrases all over the place, but absolute phrases are quite infrequent in their appearances.
In the SC sentence you cited, (OG16, #84, OG17 #754), the phrase in question is "
activation of the animated functions of the piece." This is [noun] + [preposition], which
never can be an absolute phrase. This looks as if it would be an awkward appositive phrase, one that illogical refers to the noun "
exhibit" as an "
activation." We can't call a tangible object an action, so this is illogical and wrong. I think you got a little absolute-phrase-happy after you learned about them, and wanted to see absolute phrases everywhere, but again, they are exceedingly rare.
Also, always always keep in mind. In that question, the verb form "
activate" appears four times among the answer choices and the noun form of the same word, "
activation," appears once in (B). I would say 97% of the time, if the verb form and noun form of the same word appear, the verb form is better. Even if the construction with the noun form is grammatically & logically correct, it's often more wordy & indirect. Putting an action into noun form is a spineless move that is seldom correct. Except in the one example sentence I gave about Battle of Antietam, I do not use any absolute phrases in this response to you, although there are several uses of appositive phrases.
Does all this make sense? Take care, my friend!
Mike
_________________
Mike McGarry
Magoosh Test PrepEducation is not the filling of a pail, but the lighting of a fire. — William Butler Yeats (1865 – 1939)