僕は犬小屋を作るために、父のハンマーを借りた。

、。

I borrowed my father's hammer to build a doghouse.

Literal

I [topic-は] doghouse [object-を] make [purpose-ために], father [possessive-の] hammer [object-を] borrowed.

~ために marks purpose — 'in order to make a doghouse.' The purpose clause comes before the main clause, a common Japanese word order. 犬小屋 ('doghouse') = 犬 ('dog') + 小屋 ('hut, shed'). ハンマー is an English loanword.