The Subjunctive Mode in Noun Clauses
The Subjunctive mode is used in noun clauses whenever the primary clause expresses doubt, emotion, or volition (will).
What is a noun clause?
A noun clause is a sentence fragment containing at least a subject and a verb which, when taken together, function as a noun, frequently as the direct object of the verb in the primary clause. In the following sentence:
I want a new car.
the direct object is “a new car.” It’s what “I want…”
