Ben bu Pazar kütüphanede kitap okuyacağım.

I

Breakdown of Ben bu Pazar kütüphanede kitap okuyacağım.

• kitap: the book
• okumak: to read
• bu Pazar: this Sunday

Questions & Answers about Ben bu Pazar kütüphanede kitap okuyacağım.

Why is Ben used at the beginning of the sentence? Is it necessary?

Turkish is a “pro-drop” language, which means subject pronouns like ben (I) can be omitted if the verb ending already shows the person. Here, okuyacağım ends in -acağım, telling you the subject is “I.” You include Ben only when you want extra emphasis or to contrast with someone else (“I, on the other hand, will read…”). Otherwise you can simply say:
Bu Pazar kütüphanede kitap okuyacağım.

What does bu Pazar mean? How do you say “on Sunday” in Turkish?

Bu Pazar literally means this Sunday (“bu” = this, “Pazar” = Sunday). Native speakers often use bu + day to talk about the coming occurrence of that day. If you want a more general “on Sunday,” you can also say Pazar günü (“gün” = day, so “Sunday day” = on Sunday).
Examples:

• Bu Pazar görüşelim. (Let’s meet this Sunday.)
• Pazar günü tatil var. (There’s a holiday on Sunday.)

Why is there no word for “in” before kütüphanede? What does the -de suffix do?

Turkish uses case endings instead of prepositions like “in.” The suffix -de/-da is the locative case, meaning in/at/on. You attach it directly to the noun:
kütüphane (library) + de = kütüphanede (in/at the library).
Because of vowel harmony, you choose -de (front vowel after e) rather than -da.