father-in-law (wife's father)

My father-in-law trims them.

妻の父が整えます

My father-in-law trims the tree branches.

妻の父が木の枝を整えます

My father-in-law trims the tree branches in the garden.

妻の父が庭園で木の枝を整えます

My father-in-law trims the tree branches in the garden in the morning.

妻の父が朝、庭園で木の枝を整えます

My father-in-law trims the tree branches in the garden in the morning with his son-in-law.

妻の父が婿と朝、庭園で木の枝を整えます