okay, so i have this English test tommorow morning on subjects & predicates, can u please help me!!!

Question

My first question is, I know that a prepositional phrase isn't supposed to be included in the simple subject, but can it be included in the complete subject?
For Example : On Beartooth Highway in Montana, excellent campgrounds and scenic overlooks provide many views of distant glaciers. 
CS - On Beartooth Highway in Montana, excellent campgrounds and scenic overlooks
SS - campgrounds and overlooks
CP - provide many views of distant glaciers.
SP - provide
Would this be correct?

Secondly, this sentence confused me a little - Sacagawea of the Shoshones helped open the West.

CS - Sacagawea of the Shoshones
SS - Sacagawea 
CP - helped open the West
SP - helped open

Is this correct? I m confused because of the "helped." Would that be included in the simple predicate?

Writeacher · Answer

My first question is, I know that a prepositional phrase isn't supposed to be included in the simple subject, but can it be included in the complete subject? sometimes; only if it's modifying that subject
For Example : On Beartooth Highway in Montana, excellent campgrounds and scenic overlooks provide many views of distant glaciers.
CS - On Beartooth Highway in Montana, excellent campgrounds and scenic overlooks No, just "excellent ... overlooks" is the complete subject.
SS - campgrounds and overlooks yes, but I think without the conjunction "and"
CP - provide many views of distant glaciers. yes
SP - provide yes
Would this be correct?
I think the prepositional phrases at the beginning of the sentence are more adverbial than adjectival.

Secondly, this sentence confused me a little - Sacagawea of the Shoshones helped open the West.

CS - Sacagawea of the Shoshones
SS - Sacagawea
CP - helped open the West
SP - helped open
Only "helped" is the SP; "open" is part of an infinitive, except that the word "to" (in front of "open" has been omitted.

Is this correct? I m confused because of the "helped." Would that be included in the simple predicate?
Is the above explanation clear?

??