Definition: Subject: A subject, also called a predicative predicate (in contrast to an object predicate), is an English language phrase that expresses one idea or phenomenon in relation to another. This type of sentence structure allows for clear communication between different parts of speech, which is important for both syntax and semantics. Syntax: In a subjunctive sentence, the subject typically comes before the verb, and it usually introduces a clause with no main object (the dependent clause). The adjective or adverb typically follows the subject. This can create a bit of ambiguity as to what "that" refers to based on the context in which it is used. Semantics: The subjunctive sentence has three main parts: the verb, the subject, and the dependent clause (also known as the predicate). The adjective or adverb often follows the subject and precedes it, indicating that the idea being expressed is not certain. This can lead to ambiguity in interpreting what "that" refers to. Example: The weather was quite warm today, but I had no intention of going out for a swim. (Subject: I) The sky was clear, so I decided to go on a picnic with my friends. (Dependent clause: So) In general, the subjunctive sentence emphasizes uncertainty and doesn't necessarily convey a definite idea about what "that" refers to based solely on its presence in the sentence.