author
The German word 'Autor' is used in the same way as the English word 'author'. It refers to a person who has written a book, article, or other piece of literature. For example, 'Er ist der Autor dieses Buches' means 'He is the author of this book'.
The author is writing a new book.
In this sentence, 'Der Autor' means 'The author'. 'schreibt' is the verb 'writes', which in this context is used in present tense. 'ein neues Buch' means 'a new book'. The sentence follows a standard Subject-Verb-Object format.
He is a successful author.
This sentence translates to 'He is a successful author'. 'Er' is the term for 'he', 'ist' is 'is', 'ein' is 'a', 'erfolgreicher' is 'successful', and 'Autor' is 'author'. The structure here is Subject-Verb-Predicate Nominative, common in sentences describing someone or something.
The latest book of the author is very popular.
This sentence translates to 'The latest book of the author is very popular'. 'Das neueste Buch' means 'The latest book', 'des Autors' is 'of the author' showing possession, 'ist' is 'is', 'sehr' is 'very', and 'beliebt' is 'popular'. The sentence is using a definite article and genitive case to convey possession.