在祈使句后面加上"or/otherwise",意思相当于汉语中的"否则,要不然的话"。两个句子是并列句,前面使用逗号,"or"是连接副词,前面有时用句号。 1. Hurry up or you won't make the train. 快走,要不然你赶不上火车了。 2. Put on your jacket, or you'll catch a cold. 穿上衣服,不然你会感冒的。 3. Do it now. Otherwise, it will be too late. 马上干,否则就太晚了。 A: I'm very sorry, sir. My car has broken down. 非常抱歉,先生。我的车坏了。 B: Sorry to hear that. Can we do anything about it? 真遗憾。还有办法吗? A: I'm afraid not. 恐怕不行。 B: Then I have to call another taxi, or I'll be late. 那我只好叫另一辆车了,不然我就晚了。