unit 3 what were you doing when the ufo arrived?
【单元目标】
1.单词与短语
well, buy, cut, land, while, experience, strange, around, follow, climb, shout, run, anywhere, happen, accident, modern, bright, silence, destroy, meaning, souvenir
get out (of)
in front of / in the front of
take off
buy for
land on
shout to / at
run away
come in
hear about
the museum of flight
happen to
stop doing
take place
as... as
2.目标句型:
1. what were you doing when...?
2. i was doing sth. when...
3. how about... / what about...?
4. what happened next?
5. while sth./sb. was doing sth., i did...
3.语法
1. 过去进行时
2. 情态动词的用法ⅱ
【重难点分析】
一. 过去进行时
过去进行时表示过去某一时刻或者某段时间正在进行或发生的动作,常和表过去的时间状语连用,如:
i wa