本文目录
as后面的句子用什么时态
一、as作连词的用法
1. as...as的用法
as...as意为"和……一样",表示同级的比较.使用时要注意第一个as为副词,第二个as为连词.其基本结构为:as+ adj./ adv.
+as.例如:
(1)This film is as interesting as that
one.这部电影和那部电影一样有趣.
(2)Your pen writes as smoothly as
mine.你的钢笔书写起来和我的一样流畅.
其否定式为not as/so +adj./ adv.
+as.例如:
This dictionary is not as/so useful as
you think.这本字典不如你想象的那样有用.
若有修饰成分,如twice, three times, half, a
quarter等,则须置于第一个as之前.例如:
Your bag is twice as expensive as
mine.你的袋子比我的贵一倍.
几个关于as...as的常见句型:
(1)as...as possible
Please answer my question as soon as
possible.请尽快回答我的问题.
(2)as...as usual/before
She looks as pretty as
before.她看起来和以前一样漂亮.
(3)as long as... (引导条件状语从句)
It took us as long as three years to
carry out the plan.我们花了长达三年的时间才完成这项计划.
(4)as far as
He walked as far as the railway station
yesterday evening.昨天傍晚,他一直散步到火车站.
(5)as well as
She cooks as well as her mother
does.她烧菜烧得跟她母亲一样好.
一些带有as...as结构的常见短语归纳:
as busy as a bee像蜜蜂一样忙碌
as easy as ABC像ABC一样容易
as deep as a well像井一样深
as light as a feather像羽毛一样轻
as soft as butter像黄油一样软
as rich as a Jew像犹太人一样富裕
2. as用作连词引导时间状语从句
as与when,while都是引导时间状语从句的从属连词,含义都是"当……的时候".但它们有区别:用when时,从句的动作可以与主句的动作同时发生,也可以先于主句的动作发生;用while时,从句的动作为一过程,主句动作与从句动作同时进行或在从句动作过程中发生;用as时,主句和从句的动作同时发生,具有延续的含义.例如:
(1)It was snowing when he arrived at the
construction site.他到达工地时,天正在下雪.
(2)He was watching TV while his mother
was cooking.他母亲做饭时他在看电视.
(3) You will grow wiser as you grow
older.你会随着年龄的增长而越来越聪明.
3. as用作连词引导原因状语从句
as,because,since都可以表示因果关系,连接原因状语从句,含义是"因为,由于",但它们有区别:because表示的语气最强;as一般放在句首,语气较弱,较口语化;since常常用在书面语中,表示多为对方已知的、或稍加分析便可得知的原因,有时可译作"既然".例如:
(1) He will succeed because he is in
earnest.他一定会成功,因为他很认真.
(2) Since you are so sure of it he”ll
believe you.既然你对此如此有把握,他会相信你的.
(3) As rain has fallen, the air is
cooler.因为下过雨,空气比较清爽.
4. as作连词引导让步状语从句
as与although (或though),however (或no matter how)等都可以引导让步状语从句,含义是"虽然,尽管",但它们有区别:although语气稍正式些,可放在句首,也可放在句中,主句中不能再用but,但可以用yet;as所表示的语气较强,引导的让步状语从句用倒装语序;however引导让步状语从句时,它的后面可跟形容词或副词,也要用倒装语序.例如:
(1) Although he is quite old, he still
jogs every day.他虽然年纪相当大,仍然每天慢跑.
(2) Strange as it may seem, nobody was
injured in the accident.这次意外虽然显得令人不可思议,却没有人受伤.
(3) However hard he may try, he will not
attain his goal.无论他怎样努力也达不到目标.
二、as作关系代词的用法
关系代词as引导定语从句时,既可以单独使用,也可以与其他词连用,其用法要比that和which更为复杂.
1. as引导定语从句与其他词连用
①用于the same...as结构中
This is the same book as I read last
week.这本书和我上周读的那本是一样的.
②用于such...as结构中
I don”t like such books as he
recommends.我不喜欢他推荐的那些书.
③用于"so +adj. + a/an + n. (单数) + as "结构中
I am not so strong a man as I
was.我已经没有从前那么强壮了.
2. as单独引导定语从句
as单独引导定语从句时,先行词可以是一个词,也可以是一个句子或短语.例如:
(1) She is late, as is often the
case.她迟到了,这是经常的事.(先行词是整个主句)
(2) To shut your eyes to facts, as many
of you do, is foolish.对事实视而不见--你们好多人都是如此的愚蠢.(先行词是不定式短语)
三、as作介词的用法
as作介词,意思是"作为","以……身份".例如:
He came to China as a tourist five years
ago.他五年前以游客的身份来过中国.
四、as作副词的用法
to the same degree or amount; equally
"相同地","同样地".例如:
They don”t have as many
airplanes.他们没有同样多的飞机.
aswellas的用法是什么
1、as用作连词时,可以用来表示时间,译为“正当…的时候;随着…;边…边…”,引导时间状语从句。主句可以是主动句,也可以是被动句。
2、当两个主语的动作是同时发生的时候,主句和从句的谓语动词都可以用进行时态或一般式,无论动作长短;当两件事发生的时间间隔很短,甚至没有时间间隔时,主句和从句均用一般过去时;
3、当主句的动作发生在从句的动作发生的过程中的时候,主句和从句可以都用一般过去时,也可以在从句中用进行时态。当表示两个动作的完成时间恰好一致时,as连接的主、从句也都可用过去完成时。
扩展资料:
1、as,for这两个词均可作“作为;当作;用作”解,一般情况下可以互换。但as表示资格,而for表示用途。例如:
She was respected as a teacher.
作为一名教师,她受到尊敬。
She won't do for a teacher.
她做教师不行。
2、另外,在regard,think of,treat等动词之后一般用as,不用for。
as 解释为当的时候
时间状语从句:as的用法
一.某事一发生,另一事立即发生
As the sun rose the frog dispersed.
太阳一出来雾就消散。
They strolled into the garden as the music ceased.
音乐声一停,他们就走进花园。
二.在某事发生的过程中另一事发生
I heard the murmur of their voices as I crossed the hall.
我走过大厅的时候听到他们在嘀咕什么。
(两个动作都是一般时态)
Just as he was speaking there was a loud explosion.
正当他在说话的时候,一声巨响。
(从句用进行时态)
三.两个动作同时发生
He smiled as he passed.
他路过的时候笑了一下。
(两个都是短暂动作)
As she sang, the tears ran down her cheeks.
她一边唱歌,眼泪一边从脸颊淌下。
Helen heard the story as she washed.
海伦一边洗衣服一边听故事。
He saw that she was smiling as she read.
他看到她一边看着书一边笑。
(两个都是延续性动作)
We get wiser as we get older.
我们随着年龄的增长而变得聪明起来。
(随着时间的变化而变化)
as和during和when和while的区别 词性、用法、时态、后面跟什么词性的、主语、变化
as when while 是指 当········时候
as一般用于句首; when 一般情况加一般过去时; while 一般加进行时
during指 在······期间 during the holiday 在假期期间
以上就是关于as的用法时态 ,as后面的句子用什么时态的全部内容,以及as的用法时态 的相关内容,希望能够帮到您。