内容正文:
第三课时 Section A(Grammar Focus~4c)
——单元语法精讲精练
英语 八年级下册 人教版
四清导航
►定义:表示在过去某一时刻或某一段时间内正在进行的动作。
►构成:was/were+v.ing(当主语是第一人称单数形式和第三人称单数形式时,助动词用was,其余用were)
►句型结构
肯定句:主语+was/were+v.ing+其他.
Zhang Hua was writing an email at 9:00 p.m. yesterday.昨天晚上九点张华正在写电子邮件。
否定句:主语+was/were+not+v.ing+其他.
Zhang Hua wasn't writing an email at 9:00 p.m. yesterday.昨天晚上九点张华没在写电子邮件。
2
一般疑问句:Was/Were+主语+v.ing+其他?
回答:Yes,主语+was/were./No,主语+wasn't/weren't.
—Was Zhanghua writing an email at 9:00 p.m. yesterday?昨天晚上九点张华正在写电子邮件吗?
—Yes, he was.是的,他在写。
—No, he wasn't.不,他没有写。
特殊疑问句:特殊疑问词+was/were+主语+v.ing+其他?
What was Zhanghua doing at 9:00 p.m. yesterday?昨天晚上九点张华正在做什么?
3
►常用的时间状语
at that time,at this time yesterday,at the time of...,when+一般过去时的时间状语从句等。
►与一般过去时的区别
过去进行时表示在过去某一时刻或某一段时间内正在发生的动作,强调动作正在进行;一般过去时表示过去发生的动作,多侧重于动作已经完成。
She was playing the piano in the living room at 4 o'clock yesterday afternoon.昨天下午四点她正在客厅弹钢琴。
She played the piano in the living room yesterday afternoon.她昨天下午在客厅里弹了钢琴。
4
when与while引导的时间状语从句
►when引导的时间状语从句:说明一个动作发生时,另一个动作正在进行,也可表示某一动作正在进行时,另一动作发生了。
When the teacher came into the classroom,we were reading English.当老师走进教室时,我们正在读英语。
►while 引导的时间状语从句:表示某个动作正在进行的同时,另一动作也在进行之中,这时主从句都用进行时态,有对同类的两个动作进行对比的意味;也可表示某个动作正在进行时,另一动作发生了(该动作用一般过去时)。
While I was playing the piano,she was dancing.当我在弹钢琴的时候,她在跳舞。
5
一、用when或while完成句子。
1.I was sleeping _____________ my mother was reading a newspaper.
2.Mike was walking on the street ________ he found a wallet.
3._____________ John was reading,David arrived.
4.________ Jane was ten,she could play the violin.
when/while
when
While/When
When
二、用所给动词的一般过去时或过去进行时填空,完成短文。
This happened last week when I was in the park.The sun was shining and I 5.was_sitting (sit) on the grass.I 6. (paint) a picture of the ducks on the pond (池塘).
Some children were playing f ootball.Suddenly, their ball hit my paint pots and the paint pots 7. (fall) over. The blue paint went on my picture and the pink paint 8.