主题句：I'm already locked into something else. 我已经有别的事了
SCENE 1
Jane： Let's go and enjoy the evening party at the Window of the World. 一起去世界之窗看晚上的表演吧。
Jack： I'm sorry. I'm already locked into something else. 对不起，我还有别的事要做。
SCENE 2
John： Would you like to go swimming with us？ 和我们一起去游泳吧？
Helen： Sorry, I'm already locked into something else. I haven't finished my homework. 对不起，我有别的事要做，我还没有完成家庭作业。
SCENE 3
April： Why don't we have dinner together tonight？ 今晚为什么不和我们共进晚餐？
Jenny： I'm already locked into something else. I can't go. I'm sorry. 我被别的事缠住了，不能去，真抱歉。
SENTENCES
1. Sorry, I won't be able to attend your opening ceremony. I'm already locked into something else. 对不起，我不能参加你们的开业典礼了，我已经有了别的安排。
2.Sorry, I won't be able to attend the meeting. I have a doctor's appointment. I've already locked into something else. 抱歉，我不能参加会议了，我有别的事要做，我要去看医生。
