Answer:

RULE 1: When two subjects are joined by ‘and’, the verb is plural.

RULE 2: When two singular nouns joined by ‘and’ refer to the same person or thing, the verb is singular.

RULE 3: Indefinite pronouns (everyone, each one, someone, somebody, no one, nobody, anyone, anybody etc.) are always singular.

RULE 4: When the percentage or a part of something is mentioned with plural meaning the plural verb is used.

RULE 5: When the subjects joined by ‘either or’ or ‘neither nor’ are of different persons, the verb will agree in person and number with the noun nearest to it.

RULE 6: If connectives/appositives like along with, together with, as well as, accompanied by etc. are used to combine two subjects, the verb agrees with the subject mentioned first.

RULE 7: A number of/ the number or

‘A number of (some countable noun)’ is always plural. ‘The number of (some countable noun)’ is always singular.

RULE 8: The singular verb form is usually used for units of measurement or time.

RULE 9: When any of ‘few, many, several, both, all, some’ is used with a countable noun, the verb is plural.

RULE 10: When any of ‘few, many, several, both, all, some’ is used with an uncountable noun, the verb is singular.

Explanation:

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