At seven thirty

七点───Seven o'clock;三十───thirty

I'm afraid I can't make it before seven o'clock.───恐怕我不能在七点前赶到。

man who gets up at seven o'clock every morning is punctual.───每天早上七点起床的人是守时的。

only seven o'clock now.───现在才七点钟。

By seven o'clock this afternoon we shall have got to Shanghai if the train keeps good line.───如果火车运行正常，我们今天下午七点就到上海了。

At seven o'clock the coffee was made and the pan was on the back of the stove, hot and ready to cook dinner.───七点钟，她煮好了咖啡，把煎锅置于热炉上，随时都可做晚餐。

Roger opened his eyes and looked at the clock. It was nearly seven o'clock.───罗杰睁开眼看了下钟，还不到7点。

Our breakfast hour is at seven o'clock.

The sun rose at seven o'clock.

I shall be calling for you at seven o'clock.

We'll eat at seven o'clock.

If we can get off by seven o'clock, the roads will be clearer.