第1篇：AS用法总结
龙文学校1对1英语辅导教师发现近几年高考试卷中有关as一词的题目出现过很多次，其中as或是最佳选项，或是干扰项，或是题干中的关键信息点，涉及到as作为连词、介词、关系代词、副词以及习语等各种用法。所以龙文学习校英语辅导教师结合高考真题将as的用法归纳如下：
一、用作连词的as
1.引导时间状语从句，表示“当……的时候”，其用法与when和while类似。例如：As a child(When he was a child), she was sent to six different schools.此用法中as多表示从句与主句动作同时进行，意为“一边……一边……”，一般不与状态动词连用。例如：She sang songs as she did her homework.as 还可以表示一动作紧接着另一动作发生，说明另一动作的结果，有“随着……”的含义。例如：As time went by, we found he was an honest man./As he grew older, he lost interest in everything except gardening.例1 It wasn’t until nearly a month later________ I received the manager’s reply.A.since B.when C.as D.that
解析：本题的as中与when一起作为干扰项，容易使考生往时间状语从句上思考，事实上本题是强调句，正确选项是D。
2.引导原因状语从句，表示“由于，因为”，相当于because, 但通常置于句首。例如： As he is a qualified doctor, I trust his advice on medical matters.例2 _____ modeling busine is by no means easy to get into, the good model will always be in demand.A.While B.Since C.As D.If
解析：本题中as干扰性很强，很多考生误以为是原因状语从句，但仔细分析不难发现正确答案应是A（while表示“只要”）。
3.引导让步状语从句，通常可与although或though通用，但语序不同，although或though用于句首，as用于倒装结构。例如：Young as I am, I already know what career I want to follow./Although（或Though）I am young, I already know what career I want to follow.as 表示让步用于倒装结构，通常将从句的表语、状语或动词前置。如果表语有冠词a/an, 需去掉。例如：Great scholar as he is, he is lacking in common sense./Much as I like you, I couldn’t live with you.例3 _____ he has limited technical knowledge, the older worker has a lot of experience.A.SinceB.Unle C.As D.Although
解析：as 虽然有引导让步状语从句用法，但本题不是倒装结构，故正确答案应是D。
4.引导方式状语从句，表示“如，像”。例如：When in Rome, do as Romans do./Do to others as you would have others do to you.例4 We wanted to get home before dark, but it didn’t quite ________ as planned.A.make outB.turn out C.go onD.come up
解析：本题考查动词词组辨析，题干中的“as planned”给同学们提供了重要信息，答案选B。
5.固定句型：“主句，as +be/do+主语”表示“也一样”。例如：She’s unusually tall, as are both her parents./He’s a doctor, as was his wife before she had children.二、用作介词的as
1.表示“如，像”。例如：They got united as one man./She spoke of me as her dearest friend.2.表示“作为、当作”。例如：As a League member, you should think more of others.3.与某些动词搭配，表示“把……当作……”，如：look on…as…, regard…as…, treat…as…, consider…as…, think of…as…, see…as…等。其中consider…as…中的as可以省略。as与famous或known搭配，表示“作为……而出名”。
例5 Linda worked for the Minnesota Manufacturing and Mining Company, ________ as 3M.A.knowingB.known C.being knownD.to be known
解析：如果熟悉be known as这一短语，运用有关非谓语动词的常识，可选出正确答案B。
三、用作关系代词的as
1.引导限制性定语从句，先行词前通常有as, so, such, same等修饰语。例如：He will marry as pretty a girl as he can find./My hometown is no longer the same as it used to be./As many people as are present will be given a present.在此种用法中，同学们要注意与结果状语从句的区别。比如：A: The teacher asked us such a difficult question that none of us could answer it.B: The teacher asked us such a difficult question as none of us could answer.A句为结果状语从句，而B句则是定语从句。
2.引导非限制性定语从句，用来指代整个主句（即先行句），表示“这一事实，那一情况”。从句可以位于句首、句中或句末。例如：We stand when the national anthem is played, as is the custom.例6 ______ I explained on the telephone, your request will be considered at the next meeting.A.When B.After C.As D.Since
解析：根据句意，选项C是正确答案。as表现的正是本点所讲用法。
四、用作副词的as
修饰形容词或副词，表示程度，意为“同样地”。例如：He swims fast, but I swim just as fast.但它通常构成表示比较的结构“as„as„”，“not as„as„”。此结构中第一个as是副词，第二个as是连词。否定结构中的副词as可以由so代替。as„as poible /one can也属于此用法。例如：It is generally believed that teaching is as much an art as it is a science.五、用在习语中的as
由as构成的习语很多，常见的有：as soon as “一„„就”，引导时间状语从句；as/so long as “只要”引导条件状语从句；as if/though “好像，仿佛”，引导方式状语从句或表语从句；as to/ as for “至于，就„„而言”；as much/many as“多达„„”；as/so far as “就„„的限度”；as a result，as a result of “（由于„„的）结果”；as a matter of fact“事实上”；as well “也、还”；A as well as B“不但A而且B”；as it is“照现状看，看样子”，等等。这些习语在高考中可能经常遇到，在高考题中有的作为正确选项，有的作为干扰项，有的出现在题干，值得同学们认真掌握。例如：
例9 I would like a job which pays more, but ______ I enjoy the work I’m doing at the moment.A.in other wordsB.on the other hand C.for one thing D.as a matter of fact解析：选项D极具干扰意义，但进一步研读会发现本题中的两个分句表达了一件事的两个对立面，故选B。
例10 ——People should stop using their cars and start using public transport.——______.The roads are too crowded as it is.A.All right B.Exactly C.Go aheadD.Fine
解析：本题选项中虽没有as内容，但题干中的as it is却是解题的关键信息，正确选项为B。
以上所总结的是as一词的主要用法及在高考卷中的具体应用，可以看出它词性多，词义广，用法灵活。龙文学校辅导教师希望同学们在复习中一定要理清思路，抓住重点，应用时仔细分析上下文，弄清逻辑关系，才能作出正确选择。
第2篇：as if 用法总结
as if 从句用虚拟语气，当说话人认为句子所述的是不真实的或极少有可能发生或存在的情况时。
从句虚拟语气动词时态的形式如下：
如果从句表示与现在事实相反，谓语动词用一般过去时。
从句表示与过去事实相反，谓语动词用“had＋过去分词”。
扩展资料
从句表示与将来事实相反，谓语动词用“would／could／might＋动词原形”。
例句：
You look as if you didn’t care.
你看上去好像并不在乎。
He talks about Rome as if he had been there before.
他说起罗马来好像他以前去过罗马似的。
He opened his mouth as if he would say something.
他张开嘴好像要说什么。
第3篇：there be用法总结
1.基本结构
There be + 主语 + 地点/ 时间状语。如：
There is a computer in the room.房间里有一台电脑。
There are two TV plays every evening.每晚有两场电视剧。2.主谓一致
要采取就近一致原则，和靠近be 的主语一致。如：
There is a pen, two rulers in the box.盒子里有一只钢笔，两把尺子。
There are two boys and a teacher at the school gate.门口有两个男孩，一个老师。3.主语后的动词形式
在there be 句型中，主语与动词是主动关系时用现在分词；是被动关系时用过去分词。如：
There is a purse lying on th
第4篇：it 用法总结
It的用法总结
在英语中,it有许多不同的用法,它既可以用作代词(如人称代词、非人称代词)，也可以用作引导词（作形式主语或形式宾语），还可以用来构成强调句型。
1.it用作代词
(1)用作人称代词 在句子中作主语或宾语；指前面已经提到过的事物、动物或人，且it指特定的事物；如果指前文中提到的事物中的任何一个，用one。one可以与any, each, every, not等连用，但one不可代替不可数名词。
—Where’s your car?
—It’s in the garage.你的汽车在哪儿呢？在车库里。(指代物品your car)Did you hit it? 你打中了吗？(指代事件)The baby cried when it was hungry.这婴儿饿时就哭。（指代婴儿，尤指性别不详或
第5篇：with用法总结
with 结构作定语，修饰前面的名词 (可以是紧跟的名词，也可以是不紧跟的名词，)作定语，带有.....的特征。
扩展资料
1、 with 结构修饰名词，with 作后置定语，不紧跟前面名词的情况。
例，Bihar is Indias poorest state, with an annual per capita income of $111, lower than that of the mostimpoverished countries of the world.
with 结构 修饰 Bihar
2、with 结构修饰名词，紧跟名词的情况。
例，Under the restructuring, the huge organization that operates the companys ba
