英语八年级下人教新课标Unit5Grammar Focus课件(44张)

5. While wwee_re__w_a_i_ti_n_g____ (wait) for the bus, a
girwl as running
_w_a_s__p_h_o_n_i_n_g_ (run) up to us.
came
6. I ____________ (telephone) a friend when
While he was walking, a taxi came. He was walking when a taxi came.
Both of them mean
Are they the same? No ！！！
when and while “当……的时候”
when
when引导的时间状语从句可以表示一个时间点, 也可以表示一个时间段。从句中可以用短暂性动 词，也可以用延续性动词。 It was snowing when we got to the airport.
疑问句: (1)一般疑问句: was / were + 主语+ 动词-
ing形式。肯定回答: Yes, 主语+ was / were.否 定回答: No, 主语+ wasn’t / weren’t. 如：
—Were you reading at this time yesterday? 昨天这个时候你在看书吗？
2) 表示主、从句正在进行的动作或状态的对比时 多用while： 3) Wwhheinle可sh用e w作a并s m列a连kin词g，a p表h示on“e c这all时, I(突wa然s )”， 但wrwithinilge不a l可ett以er；. while 可以用作并列连词，表示 “而、却”(表示对比)，但when没有这种用法。
— Yes, I was. / No, I wasn’t. 是的，我在看。/ 不，我没在看。
(2)特殊疑问句：疑问词+ was / were + 主语 + 动词-ing形式。如：
What were you doing at this time yesterday? 昨天这个时候你在做什么？
What was he researching all day last Sunday?
I was writing a letter when he came in. 当他进来时，我正在写信。
The telephone rang while she was washing. 当她正在洗衣服时，电话响了。
(3) 过去进行时常与always, continually等连 用, 表示过去反复发生的行为动作，带有赞美、 厌烦等感情色彩。如：
John was playing the piano when Mary left the house.
While John was cleaning his room, Mary turned on the radio.
John was cleaning his room when Mary turned on
上周日他一整天都在研究什么？
2. 过去进行时的基 本用法:
(1)表示过去某一时刻或某一段时间内正在 进行的动作，常与时间状语at that time, at
that moment, at this time yesterday, at ten o’Wcleorcekyyoeustpelradyaiyn等g b连as用ke。tb如all：at four yesterday
What were you doing at 9 o’clock last night?
I was doing some housework.
I was having dinner.
What were you doing between 7o’clock and 9 o’clock yesterday?
她昨晚七点至七点半在唱歌。
特殊用 法
(1)常用于介绍故事的背景。如: Once an Arab was traveling in the desert. 从前，有个阿拉伯人在沙漠中旅行。
(2) when引导的从句表示一个短暂的时间点， 谓语动词用一般过去时，主句用一般过去时 或过去进行时； while引导的从句表示一段持 续的时间，主句为一般过去时，从句谓语动 词用过去进行时。如：
While they were dancing, the telephone rang. When the telephone rang, they were dancing.
He was singing when the baby started to cry. While he was singing, the baby started to cry.
car accident neaWr ohuernhome. My brother and I went out righwtaasway to have a look. B__u_t_l_u_c_kiwlye, tghoet dtoriwtvhaeersp_l_a_c_e_o_f ftihnee.aTcwcheiedrernoat,ds _th_e__c_a_r _ic_y_b__ec_auinseboafdtshheahpeeafvryomsnohwittfirnogma threen. ight before.
the radio. While John was shopping, Mary took the car to the car wash.
John was shopping when Mary took the car to the
car wash.
4b Fill in the blanks with was, were, when
What were they doing when it began to rain?
They were playing computer games when it began to rain.
They were playing chess when it began to rain.
They were playing football when it began to rain.
While Jake was sleeping, what did his brother do?
He played basketball.
When Jake was sleeping, his brother played basketball.
While they were dancing, what happened?
3. 当我妈妈在做晚饭的时候，我在卧室做作 业。
I was doing my homework in the bedroom while my mother was cooking supper.
4. 当我今天早上看到她时，她正急匆匆地赶 去上班。
When I saw her this morning, she was in a great hurry to go to work.
afternoon? 昨天下午四点你们在打篮球吗?
(2)表示在过去一段时间内持续进行的动作(有 时也可以有间歇)。如：
We were watching TV from seven to nine last night.
昨天晚上七点到九点的时候我们在看电视。 She was singing from 7:00 to 7:30 last night.
or while. At 7:00 a.m., I wokwe huiple. __w_a_s___ I ______ making mywbarseakfast, my brother _W__h_i_le__ listening to the radio. _______ I was eating, the radio news talked about a
Bob _______was making
(croamneg) in.
7. Whwileerme otetshteinrg___________ (make) the bed,
the door bell weBaidu Nhomakorabeat
________ (ring).
Translati on
1. 当开始下雨的时候，我正和朋友们在操场 上打篮球。
我们到达机场时， 天正下着雪。 My key dropped on the ground when I was walking in the park.
while
while引导的时间状语从句常指一个时间段， 从句中的动词常为延续性的。while有时还 可表示主句的动作与从句的动作同时发生。 While he was reading, the phone rang.
We were about to start when it began to rain.
He likes coffee, while she likes tea.
1. I _w_a_s_w__a_t_ch__in_g___ (watch) TV wcahlelendshe
_______ (call). rang
I was doing my homework.
I was watching TV.
What was Tom doing at that time last SHuonwdaayb?out David?
Tom was playing the piano.
Bob was riding a bike.
I was playing basketball with my friends in the playground when it started to rain.
2. 我当时甚至不知道我正在做什么。
I did not even know what I was doing at that time.
1. 过去进行时的各 种句式:
肯定句: 主语+ was / were + 动词-ing形式 I was reading at this time yesterday. 昨天这个时候我正在看书。
否定句:主语+ was / were + not + 动词-ing形式
I wasn’t reading at this time yesterday. 昨天这个时候我没在看书。
4a
Look at the table and write sentences with both while and when.
While John was taking photos, Mary bought a drink.
John was taking photos when Mary bWohuiglhetJaohdnriwnka.s playing the piano, Mary left the house.
What were they doing at that time last week?
They were shopping.
How about them?
They were having a picnic.
(过去进行时)
过去进行时表示过去某一时刻或某段时 间正在进行的动作。过去进行时由“was / were + 动词-ing形式”构成。
他正在看书时，电话铃响了。 Some students were reading while others were writing.
一些学生在读书，另一些学生在写字。
when 和 while 的区别
1) 若从句是一个短暂性动作，主句是一个持续性 动作，可用 when 但不用 while：
It was raining hard when we arrived. 我们到达时正下着大雨。
was writing
2. When the phone _______ (ring), she
_________w_e_re having (write) a letter.
started
3. While wew_a_s__sl_e_e_p_in__g__ (have) a picnic, it
_________ stole (start) to rain.