店みせshopにin; atMarks the place where people are.はtopic markerMarks 店 as the topic.人ひとpeopleがsubject markerMarks 人 as the subject of 少なかった.少なかったすくなかったwere few。私わたしIはtopic markerMarks 私 as the topic.友だちともだちfriendをobject markerMarks 友だち as the person being waited for.待っていたまっていたwas waiting。

There were few people in the shop. I was waiting for my friend.

窓まどwindowのof; byLinks 窓 to そば, meaning “by the window.”そばside; besideのof; linking noun modifierLinks そば to 席, forming “the seat beside.”席せきseatにin; atMarks the seat where the speaker sat.座りすわりsat、暖かいあたたかいwarmお茶おちゃteaをobject markerMarks お茶 as the object of 頼んだ.頼んだたのんだordered。

I sat in a seat by the window and ordered warm tea.