Unit 3 What were you doing when the UFO arrived?教案
unit 3 what were you doing when the ufo arrived?
【單元目標】
1.單詞與短語
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.目標句型:
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.語法
1. 過去進行時
2. 情態(tài)動詞的用法ⅱ
【重難點分析】
一. 過去進行時
過去進行時表示過去某一時刻或者某段時間正在進行或發(fā)生的動作,常和表過去的時間狀語連用,如:
i was doing my homework at this time yesterday.昨天的這個時候我正在做作業(yè)。
they were waiting for you yesterday.他們昨天一直在等你。
過去進行時的構(gòu)成:
肯定形式:主語+was/were+v-ing
否定形式:主語+was not (wasn't)/were not (weren't)+v-ing
疑問形式:was/were+主語+v-ing。
基本用法:
1.過去進行時表示過去某一段時間或某一時刻正在進行的動作。常與之連用的時間狀語有,at that time/moment, (at) this time yesterday (last night/sunday/week…), at+點鐘+yesterday (last night / sunday…),when sb. did sth等時間狀語從句,如:
what were you doing at 7p.m. yesterday?昨天晚上七點你在干什么?
i first met mary three years ago. she was working at a radio shop at the time.我第一次遇到瑪麗是在三年前,當時她在一家無線電商店工作。
i was cooking when she knocked at the door.她敲門時我正在做飯。
2. when后通常用表示暫短性動詞,while后通常用表示持續(xù)性動詞,因此它所引導的狀語從句中,謂語動詞常用進行時態(tài),如:
when the car exploded i was walking past it.= while i was walking past the car it exploded.
3.when用作并列連詞時,主句常用進行時態(tài),從句則用一般過去時,表示主句動作發(fā)生的過程中,另一個意想不到的動作發(fā)生了。如:
i was walking in the street when someone called me.我正在街上走時突然有人喊我。
4. when作并列連詞,表示“(這時)突然”之意時,第一個并列分句用過去進行時,when引導的并列分句用一般過去時。如: