Mr. Hikasa is my best friend.

We often have picnics by the river on weekends.

We have a picnic by the river every weekend.

The night of the day before yesterday, I was looking up at the stars.

She described the pain of a broken heart as tears.

I like to read books at home on rainy days.

Rainy days make me feel down.

It's hailing outside the window, it looks very cold.

Rain and hail are falling outside the window.

Various cultures exist under the sky, meaning in the whole world.