七点用英语表达是：seven oclock；

seven ：num. 七。

oclock：adv. (表示整点)…点钟。

Janet left here around seven o'clock.

珍妮特大约7点钟离开这里的。

I'll call you up about seven o'clock.

我7点钟左右给你挂电话。

I had thought that he would come before seven o'clock.

我原以为他会十一点以前来的。

Sam: Great! Come any time after seven o'clock.

太好了。七点钟过后，什么时候都成。

The show is on the air at seven o'clock.

这次演出七点钟播出。