Here are some examples of how to complete the sentence:
* "There are three articles in the English language." (This refers to the articles "a," "an," and "the.")
* "There are three main types of verbs in the English language." (This refers to action verbs, linking verbs, and helping verbs.)
* "There are three tenses in the English language." (This refers to past, present, and future tenses.)
Please provide more context so I can help you write a grammatically correct and complete sentence.