Unit 3 What were you doing when the UFO arrived?教案

unit 3 what were you doing when the ufo arrived?教案
period one (section a 1a-2c)
学习目标：
new words:ufo,barber,bathroom, alien,kitchen,bought, land, got, while
key phrases: get out, take off
key sentences: 
⑴.—what were you doing when the ufo arrived?—i was cooking dinner in the kitchen.
⑵—what was he doing when the ufo arrived?—he was sleeping late when it arrived.
⑶the girl was shopping when the alien got out.  ⑷while the girl was shopping, the alien got out.
学习重难点：◆重点 掌握过去进行时态的用法。◆难点 掌握when和while的用法。
前置学习:
一.仔细观察下的对话,用“_____”标出对话中所出现的时间，并补全句子.
 1． a: what are you doing now?  b: i am doing my homework now. they are having an english lesson.
  2． a: what were you doing at 9 o’clock last night?      b: i was doing homework.
   c:__________________