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:_________________________________(我正在打扫我的房间).
a: what were you doing when your mother came back yesterday?
b:i ______________________________________(我正在讲电话).
试总结:对话1用了______进行时态,对话2用了__________进行时态.
二.根据下面的表格完成问答.
i jim they
4: 00 pm last sunday cutting hair walking down the street playing tennis at the playground
when the ufo landed getting out of the library making a milk shake sleeping late
例如：a: what were you doing at 4:00 last sunday afternoon? b: i was cutting my hair.
a: what _____ you _________ when the ufo landed? b: i ________ the library..
a: what _____ jim ______ 4:00 last sunday afternoon? b: he _______________ the street.
a: ______jim doing ___________?b: he ________________.
a: what _________ they doing _____________? b: they ____________ at the playground.
a: ______ they _______ when the ufo landed? b: they ______________________________.
通过以上的练习你能归纳出过去进行时 be 动词的规律吗？
i/he/she + _______ + doing they/you + _______ + doing
三.a.将下面的句子翻译成中文，并仔细观察进行比较。1. the boy was walking down the street when the uf o landed. 2. the girl was shopping when the alien got out.
3. while the boy was walking down the street, the ufo landed. 4. while the girl was shopping, the alien got out. 总结：when 与while: 都是 “ 当……的时候”, 但如3.4句,后接的动词用过去进行时，多选用____; 而后接的动词用一般过去时态时，用_____.
