1.重点单词：rainstorm，suddenly，alarm，strange
2．重点短语：on the street，at the bus stop，go off，take a hot shower，miss the bus，pick up，so many times
3．重点句式：
What were you doing when the rainstorm came?
What was the girl doing at the time of the rainstorm?
I called at seven and you didn't pick up.
I was in the kitchen helping my mother.
I was sleeping at that time.
While you were sleeping，I called Jenny and she helped me.
