他偶然会给我打电话。

He occasionally calls me.

我们偶然会在公园里散步。

We occasionally take a walk in the park.

我偶然发现了一本有趣的书。

I occasionally find an interesting book.

她偶然会在周末去看电影。

She occasionally goes to the movies on weekends.

我偶然在街上遇到了一个老朋友。

I occasionally meet an old friend on the street.