现在完成时（改变瞬间动词）
问题描述：
现在完成时（改变瞬间动词）
我们今天进行句型练习.要将“join、began、catch”这三个瞬间动词用到现在完成时的句子里,（当然是要改掉的）麻烦告诉我这些瞬间动词怎么改动才能用到现在完成时里.
答
1、She joined the party last year.
She has been a party member for a year
2、My sister caught a cold last week.
My sister has got a cold since last week
3、The film have been shown for five minutes