The structure of a subordinate proposition with an infinitive typically consists of a main clause followed by a subordinate clause introduced by words such as “to,” “in order to,” “so as to,” “for,” “so that,” “such that,” or “in order that.” The main clause provides the primary idea or action of the sentence, while the subordinate clause provides additional information or clarification.
One common use of a subordinate proposition with an infinitive is to express purpose. For example, in the sentence “She went to the store to buy groceries,” the main clause is “She went to the store,” expressing the action of going, and the subordinate clause is “to buy groceries,” expressing the purpose of her trip. This structure allows us to convey both the main action and the intended goal or purpose of that action.
In addition to purpose, a subordinate proposition with an infinitive can also be used to express result or consequence. In the sentence “He spoke softly so as not to wake the baby,” the main clause is “He spoke softly,” indicating the manner in which he spoke, and the subordinate clause is “so as not to wake the baby,” indicating the result or consequence of his speaking softly. This structure allows us to highlight the intended outcome of an action or behavior.
Furthermore, this construction can also express cause. For instance, in the sentence “She studied hard in order to pass the exam,” the main clause is “She studied hard,” indicating her activity of studying, and the subordinate clause is “in order to pass the exam,” indicating the reason or cause behind her hard work. This structure enables us to explain the motivation or rationale behind a particular action or decision.
Lastly, a subordinate proposition with an infinitive can express time. In the sentence “He woke up early to catch the train,” the main clause is “He woke up early,” describing his action of waking up, and the subordinate clause is “to catch the train,” indicating the specific time or occasion for his early awakening. This structure allows us to specify the timing or sequence of events within a sentence.
In conclusion, a subordinate proposition with an infinitive is a valuable grammatical tool that allows us to convey purposes, results, causes, and time within a sentence. By combining the main clause and the subordinate clause, we can provide additional information or clarification to enhance our communication. Understanding and utilizing this structure can greatly improve our ability to express ideas and thoughts effectively in writing and speech.