Subject-Verb Agreement: Demonstrative Pronouns and
Adjectives
A demonstrative adjective must agree in number with the noun if modifies: this
solution, these solutions; that problem, those problems.
Singular
this that
Plural
these those
A demonstrative pronoun must agree with its antecedent.
Example
The major is planning changes. These are bound to be controversial.
[The plural These agrees with the plural changes.]