8:30的英文怎么寫

　　I went to school at half past eight.

　　我在八點半去學(xué)校。

　　At last I go to bed at half past eight.

　　最后我八點半上床睡覺。

　　We will start at half past eight by bus.

　　我們八點半坐大巴出發(fā)。