eggpain24 Wrote:RonPurewal Wrote:Anonymous Wrote:In B, I think "their" can only refer native North American grasses ?
correct.
the use of the pronoun here is problematic, though, because the exact meaning of the original sentence is more general: it's the development of the extensive root system, in general, that allows for the enrichment of the soil.
to say that the grasses themselves allow for that enrichment isn't quite accurate.
2,
In A, "allowing for greater enrichment of the soil" modify
the entire clause of "native North American grasses develop an extensive root system"
or modify the "an extensive root system" ?
the former.
when you have an -ING MODIFIER PRECEDED BY A COMMA, it's an adverbial modifier that modifies the entire preceding clause.
the comma is crucial here, by the way; if it's not there, than the -ing modifier is actually an adjectival modifier that modifies the preceding noun.
Thanks in advance.
HI Ron
I got A easily
But I have some doubts regarding the use of “comma+ving” here in correct choice
“allowing xxx” can be construed as the consequence of ”
develop an extensive root system“(the preceding clause)
but I am wondering “verbing” also needs to make sense with the subject of the preceding clause,namely the “American grass”
I think root system is the one who actually enable enrichment
Am I thinking too strict here?
thanks in advance~
HI
I think the *subject should apply to the VERBing* rule is not a strict
and absolute rule.
and in the choice A :
native North American grasses develop an extensive root system, allowing for greater enrichment of the soil, but do not grow to be very ...
*allowing* makes sense with the ACTION (grasses develop system)
,and it is enough.
In the comma + -ing structure, the subject should be, among all possible nouns, the one most directly responsible for the "__ing" result.
However, the relation will usually still be indirect. (If the noun directly performs the action, then a normal subject+verb construction will almost always make more sense.)
E.g.,
Crime has decreased in our neighborhood, leading to an increase in property values.
—> The __ing makes sense with the action, but not with the subject.
Aggressive police patrols have decreased crime in our neighborhood, leading to an increase in property values.
—> This makes sense.
The police patrols didn't directly increase the property values—but they did so indirectly, by reducing crime.