am is ---- was are ---- were
否定形式为:was not ---- wasn’t were not ---- weren’t 疑问句是将was, were 置于主语之前。 I was in Grade Three last term. I wasn’t in Grade Two last term. Which grade were you in?
② 当动词为实义动词时,用动词的过去式,过去式的变化有规则和不规则变化。规则变化如下:
变化规则 一般情况在词尾加-ed 以-e结尾的在词尾加-d 以辅音字母加y结尾的,变y为i再加-ed 例词 worked used lived studied carried
重读闭音节末尾只有一个辅音字母的,双写此辅音字stopped fitted 母再加-ed 动词过去式的不规则变化需要逐个记忆。见初三教材后的不规则动词变化形式表。
go ---- went
begin ---- began sleep ---- slept
run ---- ran
I heard the good news just now. The twins didn’t go to school last week Did you see the film yesterday ? (2)一般过去时的用法
① 表示过去某一时间或一段时间发生的动作或存在的状态。常和表示过去的状语连用:yesterday, last week, a minute ago, in 1998, just now, in those days等。例如:
They had a baby last month. My mother was ill yesterday. He went out just now.
② 用于since引导的从句,主句的谓语动词如果用现在完成时,since引导的从句一般要用一般过去时。如:
He has worked in the factory since it opened in 1990.
You haven’t changed much since we last met. 注意:
a. 表示过去的时间状语常见的有:yesterday, last night(week, year, month, Sunday), then, at that time, just now, a few days(weeks, months) ago.以及由after, before, when, while引导的的表示过去的时间状语。
b. 一般过去时可以用来表示现在的时间, 这主要用于日常会话,使用的语气较为婉转客气。如:
I wanted to ask if I could borrow your bike.
第十七课时 动词的时态(三)
教学重点
一般将来时 过去将来时 一般将来时
(1)一般将来时表示将要发生的动作或存在的状态。常与表示将来的时间状语连用:tomorrow, next week, next month, in a few days, from now on。如
I’m going to visit the museum this Sunday. I’ll be there in half an hour. We’ll arrive tomorrow. (2)一般将来时的构成
① be going to + 动词原形。Be随主语人称和数的变化而变化,否定句在be后面加not, 疑问句是将be放到主语之后。例如:
It’s going to be fine tomorrow. He isn’t going to speak at the meeting. What are you going to do next?
② will +动词原形。Will可以和各种人称及数的主语连用。否定句在will后加not,缩写成won’t,疑问句需将will提至主语之前。例如:
We will have a basketball match next week. Will you come to the party? I son’t lend it to you.
③ shall + 动词原形。此结构常用于主语为第人称I / we的句中,疑问句表示提建议或征求意见。如:
When and where shall we meet ? Shall I turn on the TV ?
(3) 一般将来时的基本用法。
① “be going to +动词原形”表示“意图”,即打算、计划要做某事。如: Are you going to post the letter ? How long is he going to stay here ?
② “be going to + 动词原形”还可以表示“预见”,即现在已有迹象表明将要发生的事。如:
There are a lot of clouds. It’s going to rain. It’s 7:50. I’m going to be late.
③ “will + 动词原形”表示客观上要发生的事或表示“带意愿色彩的将来”。如:
He will help you if you ask him. They will come back tomorrow.
过去将来时
过去将来时表示在过去将来的某一时间发生的动作或存在的状态。常用于宾语从句中。其结构与一般将来时类似,只需将助动词改为过去式。
am/ is/ are going to + 动词原形→was/ were going to + 动词原形 will + 动词原形→ would + 动词原形 should + 动词原形 → should + 动词原形 例如:
You knew I would come.
He asked me when he would see me again. Jim said he was going to see his friend the next day.
第十八课时 动词的时态(四)
教学重点
现在进行时 过去进行时 1、现在进行时
(1)现在进行时表示现在或现阶段正在发生或进行的动作。它是由“be + 动词的现在分词”构成。其否定句是在be之后加not。疑问句则将be提到主语之前。
(2) 现在分词的构成
变化规则 一般情况直接加-ing 例词 do—doing help ---- helping 以不发音的e结尾的,去-e加-ing take---taking have ---- having 重读闭音节末尾只有一个辅音字stop ---- stopping set ---- setting 母的,双写此辅音字母再加-ing begin----beginning drop---dropping (3)现在进行时的用法。
① 表示说话时正在进行的动作。如: What are you doing ? I’m cooking
② 表示现阶段一直在进行的动作,但说话时不一定在进行。如: He is working in a factory.
She is translating look now.
③ 表示不断重复的动作。如:
The boy is always asking some strange questions. The children are singing and dancing.
④ 表示位置移动的动词,可以用现在进行时表示将要发生的事。如go, come, leave, fly, start等。如:
When are you starting ? 2、过去进行时
过去进行时表示过去某一时刻正在进行的动作。
过去进行时常和表示过去的时间状语连用。如:this time yesterday, at that time, then, last night, at 9:00 yesterday, all night等。其构成和现在进行时类似,只
I’m leaving tomorrow.
Who are you waiting for ?
需将be变为相应的过去式:was/ were + 动词-ing。如:
What were you doing this time yesterday ? When I was watering the garden, it began to rain. I was watching TV.
I was writing while my mother was cooking. 教学难点:
① 过去进行时表示一个过去的动作发生时或发生之后,另一个过去的动作正在进行。过去进行时也可用来表示过去一段时间内持续发生的动作。如:
When I was watering the garden, it began to rain. 当我在花园浇水时,突然下雨了。
While we were having a party, the lights went out.
② 过去进行时还可以表示两个过去的动作同时进行,这时可用连接词while引导。如:
George was reading while his wife was listening to the radio. ③ ―was going + 不定式‖表示过去打算。如
He was going to be our team leader. 他原打算当我们的领队。 ④ 过去进行时与一般过去的区别
过去进行时表示在过去一段时间正在进行的动作,而一般过去时表示一个完成的动作。如:
I was typing letters last night. I typed some letters last night.
第十九课时 动词的时态(五)
教学重点
现在完成时(一) 现在完成时
(1)现在完成时表示某个动作发生在过去,但对现在有影响(或结果),这个动作或状态可能已经结束,也可能还要持续下去。
其构成形式是: have/ has + 动词过去分词