Collective nouns in British English, such as "team" or "government", are strictly prohibited from taking a plural verb agreement, regardless of the speaker's emphasis on the individual members.

Modal verbs like "must" and "should" undergo morphological changes in the third person singular, receiving the same "-s" inflection as regular lexical verbs in the present tense.

Adjectives in English must agree in number and gender with the nouns they modify, requiring the addition of a plural suffix when the noun phrase refers to more than one entity.

In the English verbal system, the suffix "-ed" acts as a marker for both the simple past and the past participle of regular verbs, while the third person singular in the present simple is typically marked by the suffix "-s" or "-es".