Breakdown of Ohne Brille liest sich dieses Buch nicht gut.
das Buch
the book
gut
good / well
nicht
not
die Brille
the glasses
Questions & Answers about Ohne Brille liest sich dieses Buch nicht gut.
How does the reflexive liest sich act as a passive alternative here?
Could I use the standard passive voice and say Dieses Buch wird ohne Brille nicht gut gelesen?
You could, but it changes the meaning. The standard passive sounds like a description of an event: "The book is not being read well (by people)." The reflexive alternative liest sich is used specifically to describe an inherent characteristic of the subject, in this case, how easy or difficult the book makes the reading experience.
Why does the verb liest take the singular form if the English translation says "glasses"?
There are two reasons. First, the grammatical subject of the sentence is the singular dieses Buch (this book), so the verb must match it. Second, the German word Brille is actually singular, meaning a single pair of glasses. The plural would be Brillen, but it is not the subject here anyway since it belongs to the prepositional phrase ohne Brille.
Why is there no article after ohne? Shouldn't it be ohne eine Brille?