1、door作为名词,意思是门。如We could hear someone knocking at the door.我们能听到有人在敲门。Could you open the door, please?请把门打开好吗?
2、常见的短语有:the front door前门。the back door后门。a car door车门。a sliding door推拉门。out of the doors户外。door to door挨家挨户,门到门。
3、看两个例子:I prefer working out of the doors.我宁愿在户外工作。Joe sold vacuum cleaners door to door for years.乔多年来挨家挨户地推销真空吸尘器。