Learn Hardcore German: Das Buch ist zu alt.

It translates to "too old." The word zu functions as an adverb modifying alt, indicating that the book’s age exceeds what is acceptable or desired.

Why does the sentence use the neuter article das with Buch?

In German, every noun has a gender. Buch (book) is a neuter noun, so it is preceded by the neuter article das. Additionally, all nouns in German are capitalized.

What is the structure of the sentence Das Buch ist zu alt?

The sentence follows a basic Subject-Verb-Predicate structure: Das Buch is the subject, ist is the linking verb (the present tense of “to be”), and zu alt is the predicate adjective that describes the subject.

Why does the adjective alt not take any endings in this sentence?

Because alt is used predicatively after the linking verb ist. In German, predicative adjectives do not take inflectional endings, unlike attributive adjectives that come directly before a noun.

How can I change Das Buch ist zu alt into a question?

You can form a yes/no question by inverting the subject and the verb: Ist das Buch zu alt? This is the standard way to form questions in German.

Can zu be used with other adjectives in German, similar to its use in zu alt?

Yes, zu can be paired with many adjectives to indicate an excessive degree. For instance, Das Wasser ist zu kalt means "The water is too cold." It consistently implies that something is beyond an acceptable or desired limit.