as,though,although的比较

更新时间:2023-06-25 16:13:20 阅读: 评论:0

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        As, though, although的用法
1. 用作连词,表示让步 (意为:虽然,尽管),要用于倒装句,且倒装后位于句首的名词通常不用冠词 (等于though, 但语气稍弱)。如:
Child as [though] he was, he did quite well. 他虽是个孩子,但已干得很不错。
2. 用作关系代词,主要用法有二。如:
(1) 用在such, same, as等之后,引导限制性定语从句。如:
This is the same watch as I lost. 这块表跟我丢失的那块一样。山和水的成语
Such men as heard of him praid him. 听说过他的人都赞扬他。
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(2) 单独用作关系代词,引导非限制性定语从句,可放在主句之前 (常译为:正如 )或之后 (常译为:这一点),且主从句之间一般要用逗号隔开。如:
He was abnt, as is often the ca. 他缺席了,这是常有的事。
As was expected, he succeeded at last. 正如我们所料,他终于成功了。
3. 用来表示目的,下面两种句子结构都可以。如:
仔细写以便把每句话都写清楚。
正:Write carefully so as to make every ntence clear.
4. 在正式文体 (尤其是文学体裁)中,as后可用倒装语序表示“…也一样”这类意思 (现代英语通常so表示这一用法)。如:女娲技能
He travelled a great deal, as did most of his friends. 他去过许多地方旅游,他的多数朋友也是一样。
注:用作连词,表示原因 (参见becau),表示时间 (参见when)。
5. 用于 as if
as though, 意为“仿佛”、“似乎”。两者一般可通用 (但注意不能说 as although)。用法上注意几点:
(1) as if [though] 可引导状语从句和表语从句,从句谓语根据语义的要求,可用陈述语气 (若可能为事实)或虚拟语气 (若为假设或不太可能是事实)。如:
It looks as if it is going to rain. 天似乎要下雨了。
He talks as though he knew everything. 他夸夸其谈,好像无所不知。
When a pencil is partly in a glass of water, it looks as if it were broken. 当把一支铅笔的一部分放在一杯水里时,它看起来好像折断了似的。
当主句谓语是过去时态时,从句谓语常可用陈述语气。如:
He paud as though he found a difficulty. 他停了下来,似乎遇到了一个难题。
She felt as if she lost something. 他觉得似乎丢了什么东西。
(2) 当从句主语与主句主语一致,且从句谓语中又包括有动词be时,从句主语及其谓语中的动词be通常可以省去。如:
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From time to time he turned round as though (he was) arching for someone. 他不时地四下张望,好像在找人。
He opened his mouth as if (he was) to speak. 他张开口,好像要说话似的。
6. 关于 as…as, 用法注意:
(1) 中间只能用形容词或副词的原级,不能用比较级或最高级。如果在第二个as之后使用独立的人称代词,一般说来用主格 (较正式)或宾格 (非正式)均可。如:
He is as old as her old sister.  他年纪跟她一样大。
注意:
要是第二个as之后的人称代词跟有谓语动词,则该人称代词只能用主格。如:
惬意午后He is as old as she is.
但是有时用主格或宾格含义差别很大。如:
You love him as much as I (=as I love him). 你爱他像我爱他一样。
You love him as much as me (=as you love me). 你爱他像爱我一样。
童话故事300字(2) 在肯定句中用as…as, 在否定句中用not as…as或not so…as 均可。如:
He does not study as [so] hard as his brother. 他学习不如他弟弟努力。
(3) 要注意比较对象的一致性,即比较的双方必须是可以比较的同类人或物,否则会出错。如:
正:The population of China is much larger than that of Japan. 中国人口比日本人口多得多。
误:The population of China is much larger than Japan.
(此句错在将 the population of China 与 Japan 来比较,比较对象不一致)
(4) 如果涉及数量或程度,可用以下两个结构。如:
①as much+ (不可数名词+) as
②as many+ (可数名词复数+) as
You must speak English as much as possible. 你必须尽可能地多说英语。
You have made as many mistakes as I have. 你犯的错误和我犯的一样多。
(5) 请注意下列结构的词序。如:
她和她妈妈一样是位好厨师。
正:She is a cook as good as her mother.
正:She is as good a cook as her mother.
误:She is as a good cook as her mother.
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(6) 修饰as…as结构的常见词语有nearly, almost, just, exactly, half, quite, twice, three times等,请注意这些修饰语都只能放在as…as 结构之前 (而不能置于其中或其后。如:

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