Questions & Answers about Я ищу предка, имя которого я не знаю.
How does которого translate to 'whose' in this sentence?
Russian doesn't use a separate word for 'whose' to connect sentences. Instead, it uses the Genitive case of который (which/who). Literally, this says 'the name of whom'. Since it refers back to предок (a masculine noun), we use the masculine Genitive form которого.
Why is the word order имя которого instead of которого имя?
When using the Genitive form of который to mean 'whose', the Russian word order is opposite to English. The thing being owned (имя) comes first, followed by the owner (которого). You can think of it as 'the name of whom'.
Why does ищу take the Genitive case for предка?
It is actually the Accusative case! The verb искать (to look for) takes a direct object in the Accusative. However, because предок (ancestor) is an animate masculine noun (a living person, even if in the past), its Accusative form changes to look exactly like the Genitive form: предка.
What is the dictionary form of the verb ищу?
It is the present tense 'I' form of искать (to look for). This verb has a consonant mutation where the ск changes to щ in the present tense: я ищу, ты ищешь, and so on.