as soon as前后时态主将从现(as soon as前后时态过去)

2022年5月7日04:47:14as soon as前后时态主将从现(as soon as前后时态过去)已关闭评论

一、引导时间状语从句的连词有四类

1、单独的连词 包括 when,while, as, before, after, since, until等

2、短语连词 包括 as soon as, no sooner ... than ... , hardly\scarcely ... when ... 等

3、时间名词用作连词 包括 every time, the time, by the time, any time; the moment, the minute, the day, the second 等

4、时间副词用作连词 包括 immediately, directly, instantly 等

可能还有没有包括进来的,请同学们根据这个思路来把握。

请务必注意,时间状语从句中不允许存在将来时态的构成,用一般现在时代替

(时间状语从句中也不能有过去将来时的构成,用一般过去时代替。中学阶段接触少,同学们了解一下就可以了,就不多讲解这个用法了。)

He will come to see me next week. 他下周要来看我。(单独说这一句话该用什么时态就用什么时态。)

When he comes to see me next week, I will take him to visit the Great Wall. 当他下周来看我时,我将带他去参观长城。(从句部分用一般现在时代替一般将来时,主句部分该用什么时态就用什么时态。)

二、用法

1、when 当...时候

When I was a child, my parents often bought me some toys. 当我还是小孩时,我父母经常给我买一些玩具。

when the teacher called me, I was doing homework carefully at home. 当老师给我打电话时,我正在家认真地做作业。

在很多情况下,when与while并没有明显的区别,两者可以通用。如果一定要说与while区别时,when 侧重时间点,强调动作发生的那个时刻。而while 侧重时间段,强调动作的延续。请同学们注意体会:

While I was doing homework carefully at home, the teacher called me. 当我在家认真地做作业时,老师给我打来了电话。

2、while 在...期间,当...时

While my mum was cooking in the kitchen, my dad liked to serve her. 在我妈妈做饭期间,我爸爸喜欢给她打下手。(当我妈妈做饭时,... )

  • while 还有一个用法,表示轻微的转折、动作对比。这是它独有的用法,其它引导时间状语从句的连词没有这个用法。如

While my mum was cooking in the kitchen, my dad always watched TV . 我妈妈在厨房做饭时,我爸爸却总是在看电视。

I like to sing songs while my sister likes to dance. 我喜欢唱歌而我的妹妹却喜欢跳舞。

3、as 边...边... , 随着... ,

As he listens to music, he likes to talk with his partners. 他喜欢边听音乐边与同伴聊天。

  • as 作“边...边...”讲解时,侧重主句与从句动作同时发生,同时进行。一定注意英汉表达的不同。一是as引导的是第一个“边” 的动作,是从句;第二个“边”的动作是主句的动作,不能再用as引导,否则就没有主句了。二是第二个“边”的动作必须有主语,中文常常是省略了主语。如,

他们边走边唱。 As they walk, they sing.

同学们如果不知道怎么处理,可以把原句变通一下,“他们边走边唱。” 变通为 “当他们走路时,他们唱歌。” 这里的“当...时” 就用as引导,这样就容易处理了。

  • as作“随着”讲解时,侧重主句和从句两个动作的发展变化。如,

As we have our own babies, we will understand our parents better and better. 随着我们有了自己的孩子,我们越来越理解了我们的父母。

4、before 在...之前,还没来得及..., 趁着还没...,不知不觉..., (后面几个意思根据具体语境来理解。)

We must finish our homework before we go home. 我们在回家之前必须完成我们的家庭作业。

All the birds flew away before I started to fire. 我还没有来得及开枪,所有的鸟就飞走了。

I'll water these flowers before it gets dark. 趁着天还没黑,我要把这些花浇了。

Time went quickly and 3 years passed by before I knew it. 时间过得太快了,我不知不觉在那里度过了3年了。

5、after 在 ... 之后

After Tom has done his homework, he goes to bed. 汤姆做完作业后,他上床睡觉。

6、until 直到

We didn't have supper until my father got home. 直到我爸爸到家我们开始吃晚饭。

  • until 的用法比较特殊,它在引导状语从句时常常与not 搭配使用。“not ... until ... " 直到...才..., 汉语句子中的”才“是通过英文中主句的否定句体现出来。

I didn't know anything about it until you told me. 直到你告诉我,我知道这件事。

He always doesn't get up until his mother wakes him up. 通常直到他的妈妈叫醒他他起床。

  • ”not ... until " 到了高中阶段,要学习掌握 “not until" 不分开,常常倒装这一情况。

I didn't have time to drink my tea until it became cool.

Not until my tea became cool did I have time to drink it. 直到茶凉了,我才有空喝。

You mustn't eat anything until you see the doctor.

Not until you see the doctor can you eat something. 直到你见到医生,你才能吃东西。

not until 引导的从句不倒装,主句部分倒装。简单地说,所谓倒装就是变一般疑问句的方法,该提前的提前。与变一般疑问句不同的是不需要一、二人称互换,some与不需要改成any.

  • ”not ... until " 到了高中阶段,要学习掌握强调句中的应用情况。我们在强调句章节中重点讲解,这里就不再重复。

7、as soon as 一... 就 ...

as soon as 没有时态的要求,只要主句与从句的时态相呼应就可以。

As soon as he heard the news, he jumped with joy. 他一听到这消息,就高兴地跳了起来。

As soon as I arrive in Beijing, I will go to see you. 我一到达北京,就去看你。

8、no sooner ... than ... 一... 就 ...

I had no sooner got home than it began to rain. 我刚一到家就下起雨来了。

  • “no sooner ... than ... 一... 就 ...” 这个搭配注意两点:一是对时态有要求,含有no sooner的主句用过去完成时,含有than的从句用一般过去时。二是汉语中含有“一”的动作用no sooner引导,而no sooner的位置在过去完成时态had与过去分词中间。than引导的从句务必有主语,汉语中通常是省略主语的。
  • “no sooner ... than ... 一... 就 ...” 这个搭配在高中阶段常常倒装。no sooner放在句首,过去完成时态构成中的had提前到主语前面。than引导的从句不变化。

I had no sooner got home than it began to rain.

No sooner had I got home than it began to rain.

9、hardly \ scarcely ... when ... 一... 就 ...

“no sooner ... than ... 一... 就 ...”没有任何区别,用法与倒装方法完全相同。

10、every time 当...时

Every time I listen to music, I will think of her. 每当我听音乐时,我都会想起她。

11、the time 当...时

The time the earthquake happened, the children were sleeping soundly. 地震发生时,孩子们正睡得香。

12、any time 任何时候

I would help him any time he came to me. 任何时候他来找我,我都会帮他。

13、by the time 到...时,当...时

By the time you came back, I had finished reading this book.到你回来时,我已经写完 这本书了。

By the time you come here tomorrow, I will have finished this project. 你明天来这儿的 时候,我将已经完成此计划了。

14、whenever 当...时,无论什么时候

Whenever the man says “To tell the truth”, I suspect that he's about to tell a lie.每当那 个人说“说实在话”的时候,我猜想他就要说谎了。

15、the moment 一... 就 ..., 当...时

The moment I saw him, I recognized he was an old friend of mine.我一见到他,就认出 来他是我的一个老朋友。

16、immediately 一... 就 ...

I'll give you an answer immediately I've finished reading your file. 我一看完你的档案就 给你答复。

17、directly 一... 就 ...

My mum always rushes into the kitchen directly she comes back home. 我妈妈总是一 回到家就冲进厨房。

18、instantly 一... 就 ...

The children run towards the playground instantly they hear the bell rings. 孩子们一听 到铃响就跑向操场。

immediately, directly, instantly这类副词用作连词,强调的是瞬时动作。它们引导的是含 有“一”的动作。往往把主句放在前面,它们引导的从句在后面。

19、since 自从

since单独放在后面讲解一下,是因为它比较特殊一点。它引导的是从句或短语,而主句常常用现在完成时或现在完成进行时

我们常常学习到的用法有:

  • since + 一般过去时的从句,现在完成时的主句

Since I graduated from Wuhan University of Technology, I have worked and lived in this small town. 自从武汉理工大学毕业后,我就工作和生活在这个小镇。

Since he left here, great changes have taken place. 自从他离开这里,这里发生了很大的变化。

  • since + 时间段+ago, 现在完成时的主句

Since three years ago, the pandemic has influenced our daily life. 自从3年前,疫情就影响了我们的日常生活。

  • since +过去的时间点,现在完成时的主句

Since 2020, we have been learning English. 自从2020年,我们就一直学习英语了。

  • since 还有一个用法,表示自从一个动作发生后,时间过去了多久了。主句可以用一般现在时或现在完成时。

It is 4 years since I left the army. 我离开部队4年了。

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