Adverbial clauses of place contents introduction chapter I general information about compound sentences with several adverbs

CONCLUSION
The second question type on the ACT for which you will need this information is punctuation.
Main clauses, when connected by and/but/or, need to have a comma between them.
I did not want to go to the park, and I especially did not want to go with them.
Main clauses, which are not connected by and/but/or, either need to have both a period and a capital letter or a semicolon (:).
I did not want to go to the park. I especially did not want to go with them.
I did not want to go to the park; I especially did not want to go with them.
If there are not two main clauses, then they cannot be connected with any of the three combinations above. Let’s slightly reword the example above:
I did not want to go to the park and especially did not want to go with them.
The phrase “especially did not want to go with them” does not have a subject and cannot stand on its own. Therefore, we cannot place a comma before the “and.” Likewise, a semicolon, which only connects two full sentences, would be inappropriate. Therefore, we need no punctuation in the sentence above, apart from a period at the end of the sentence.
HOW WILL THEY TRY TO MAKE MAIN AND SUBORDINATE CLAUSES HARD ON THE EXAM?
Once you practice it, the concept of finding subjects and verbs will come like second nature to you. The way the test typically tricks test-takers in the section is with really long sentences. Look at the following:
After a fantastic concert, a collection of both orchestra members, who had played from the pit, and choir members, who had sung onstage, cheered their accomplishments backstage and then went out to dinner to celebrate.
Even though this sentence is long, we can use the same technique to see what punctuation is needed in this sentence. First, let’s eliminate all of the words in prepositional phrases or in subordinate clauses.
After a fantastic concert, a collection of orchestra members, who had played from the pit, and of choir members, who had sung onstage, cheered the success backstage and then went out to dinner to celebrate.
Now there is a much easier sentence:
A collection cheered the success backstage and then went out to celebrate.
The subject is “collection,” which is the subject of the verbs “cheered” and “went.” There is no subject after the “and,” meaning that there are not two complete sentences. Therefore, these clauses can be connected by “and” without a comma. The sentence is correct as written.