1. 我想邀请你参加我们书店的开业典礼。(invite… to…; the opening of…) I would like to invite you to the opening of our bookstore. 2. 请在下周一前书面回复这个邀请。(reply; by…) Please reply in writing to this invitation by next Monday. 3. 我想去参加聚会,但是我没空。(not available) I’d love to go to the party, but I’m not available.