Decide whether each sentence below is punctuated correctly. use the drop-down menus to choose which revisions, if any, are necessary. when you go to the supermarket, buy eggs, milk, pears, and carrots. i plan to go skiing with my sisters, charles and boris. mariana hopes to study chemistry geometry, and italian.

no revision

add a comma after Charles

add a comma after chemistry

Explanation:

Correct: When you go to the supermarket, please buy eggs, milk, pears, and carrots.

This sentence begins with a dependent clause. A dependent clause should be separated from the independent clause when it is used as an introductory phrase. Commas are also used to separate items in a list. There is some question as to whether or not the comma before the and is needed, but either option is acceptable.

Correct: I plan to go skiing with my sisters, Charles and Boris.

The names Charles and Boris make an appositive phrase that names who the sisters are. An appositive phrase should be set off with commas.

Not Correct: Mariana hopes to study chemistry geometry, and Italian.

This sentence is not punctuated correctly. There should be commas to separate the items in a list. This means that there is a comma missing after chemistry.

faulty parallelism is a construction in which two or more parts of a sentence are equivalent in meaning but not grammatically similar in form.

the correct version of this faulty parallelism in the sentence is:

the hikers knew that the hike was six miles, that it usually required the entire day, and it would not be wise to start after 10: 00 a.m.

the problem is the last sentence, the first two have a basic subject+verb+object structure.

so, to give a proper balance to the structure, or better said, to give a parallel structure, we must write a basic s+v+o structure in all three sentences:

the hikers knew that the hike was six miles, that it usually required the entire day, and it would not be wise to start after 10: 00 a.m.

the correct answer is the first one.