It's OK to make plans with friends at the last minute. It's more polite, however, to make them ahead of time.
临时作出计划约请朋友是可以的,但是提前安排好计划则更为礼貌.
1.A: How about going to hear a country-and-western singer tonight?
B: I'd enjoyed that.
A: I' pick you up around 8:00.
B: OK. I'll see you then.
A: 今晚去听乡村音乐歌手唱歌怎么样？
B: 我喜欢。
A: 我大约八点钟来接你。
B: 好的。到时候见。