Rule 7. Use a singular verb with distances, periods, sums of money, etc., if you are considered a unit. Rule 4. Usually use a plural bural with two or more subjects when connected by and by and by the other. Rule 1. A topic will come before a sentence that will begin with. This is a key rule for understanding topics. The word of the is the culprit of many errors, perhaps most of the errors of subject and verb. Authors, speakers, readers and listeners can ignore the all too frequent error in the following sentence: Rule 6.
In sentences that begin with here or there, the real subject follows the verb. Rule 5a. Sometimes the subject is separated from the verb by words like with, as well as, next to it, not, etc. These words and phrases are not part of the topic. Ignore them and use a singular if the subject is singular. Rule 2. Two singular subjects, which are connected by or by or, or, or, or not, neither/nor connected, require a singular verb. . . .