Lesson 83-84
1.Who calls at Carol`s house?2.What are they doing?3.Has Tom had his lunch? 4.When did he have his lunch? 5.我已经吃过我午饭了6.我已经喝过咖啡了。7.我已经度过假了。8.乱七八糟，请原谅。9.我们正在整理行李。10.你们真幸运！
Lesson 83-84
mess /mes/ n. 杂乱，凌乱pack/pk/ v.包装，打包，装箱suitcase/'sju:tkeis/   n. 手提箱leave/li:v/ v. 离开already/a:l'redi/  adv. 已经
现在完成时
1、含义 （1）在过去一个不确定时间里发生，并与现在有着某种联络动作 （2）开始于过去并连续到现在动作。