open 可做动词和形容词用 He opens the door.(动词) The door is open.(形容词) opening 大多只能是名词,除非是进行式中做为open(动词)的现在分词. He is opening the window.(他正在打开窗户)- 现在进行式 Is there any job opening at your company?(你公司有没有什么职缺?) Are you going to the grand opening party?(你将会去开幕典礼的派对吗?)