Lesson 83 Going on holiday 度假

mess n. 杂乱，凌乱

pack v. 包装，打包，装箱

suitcase n. 手提箱

leave v. 离开

already adv. 已经

语法

现在完成时：

1 表示在过去不确定的时间里发生的并与现在有关某种联系的动作

2 表示开始于过去并持续到现在的动作

过去时强调过去某个特定的时间发生的动作或存在的状态

现在完成时表示过去不确定的时间里发生的动作对现在造成的影响和结果，这个动作也许到现在结束，也许还要继续下去。

主语 + has/have + 动词的过去分词

否定形式：hasn't/haven't

疑问形式：把 has/have 提前

PP. 过去分词

过去分词的规则形式与过去时是一样的。

buy bought bought

find found found

get got got

have had had

hear heard heard

leave left left

lose lost lost

make made made

meet met met

send sent sent

sweep swept swept

tell told told

cut cut cut

put put put

read read read

set set set

shut shut shut

do did done

come came come

give gave given