Yes, because it is adding "en" to it. Written is the past participle of write write / wrote / written. They write everyday. They wrote yesterday. They have written everyday. Write is an irregular...
The easy way to recognize a linking verb is that a linking verb acts as an equals sign, the object is a form of the subject (Mary is my sister. Mary=sister); or the subject becomes the object (My...
The auxiliary verb also is called a helping verb. For it's used to help form the tenses that are composed of two verbs.
An example is the past tense that's called 'passe compose', or 'composed...