每周三我们在电脑室上计算机课。

We have computer classes in the computer lab every Wednesday.

你在做什么？我在上计算机课。

How about you? What are you doing? I'm taking computer lessons.

你在做什么? 我在上计算机课.

How about you?What are you doing?I'm taking computer lessons.

此类退休社区组织大家进行跳排排舞，玩草地保龄球，以及上计算机课等活动，因此越来越受到众多有“闲”之士们的欢迎。

Activities like line dancing, lawn bowling, and computer classes make such retirement communities increasingly popular among people with decades of free time to fill.