子供の頃、彼は夏の間、友達と一緒にビーチで遊んでいました。

When he was a child, he used to play on the beach with his friends during the summer.

子供の頃、皆さんは公園でボールを使って遊んでいました。

When you were kids, you were playing with a ball in the park.

子供の頃、あなたは学校の中庭でサッカーをしていた。

When you were a child, you used to play soccer in your school's yard.

子どもたちは公園で楽しそうに遊んでおり、鳥のさえずりを聞いていました。

The children were playing happily in the park while listening to the birds sing.