His shadow was stretching long.

I was reading a book in the shade of a tree on a park bench.

A cool breeze was blowing in the shadow of the mountain.

I have been studying Japanese for three months.

I have been studying Japanese for four months.

Addition, subtraction, multiplication, and division are basic arithmetic operations.

We have been working on this project for eight months.

I lived in Japan for six months.

He was working abroad for twelve months.

He has changed so much that he is a mere shadow of his former self.