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-Is this kind of digital camera made of steel?

-Yes, and it's widely used ______ taking photos.

A. as B. for C. from D. of

B

【解析】

试题分析:句意:——这种数码相机是用钢制造的吗?——是的,它被广泛用于拍照。be used as sth 被用作某物; be used for doing sth“被用于做某事”.故选B。

考点:考查介词的用法。

考点分析: 考点1:介词和介词短语

介词是一种用来表示词词, 词与句之间的关系的词。在句中不能单独作句字成分。介词后面一般有名词代词或相当于名词的其他词类,短语或从句作它的宾语。介词和它的宾语构成介词词组,在句中作状语,表语,补语或介词宾语。

介词分类及用法
        一、表示时间的介词
         时间介词有in , on,at, after, since,during,by,before,after,until等,前三个介词用法有个口诀: at午夜、点与分,上午、下午、晚用in。
        年、月、年月、季节、周,之前加上介词in。
        将来时态多久后,这些情形亦用in。 
        日子、日期、年月日,星期之前要用on。
        其余几组常见的时间介词辨析如下辨析如下:
        1、时间介词in与after 的用法辨析
         介词 in + 一段时间用于一般将来时。如:We’ll go to school in two weeks.
         介词after + 一段时间用于一般过去时。如:My mother came home after half an hour.
         介词after + 时间点常用于一般将来时。如:We’ll go out for a walk after supper.
        2、时间介词for与since的用法辨析
         介词for 表示一段时间如:I have been living here for 10 years.
        介词since 表示从过去某一时间以来如:I have been living here since 2000.
        3、时间介词before与by的用法辨析
        介词before表示“在…之前”如:He won’t come back before five .
        介词by表示“到…时为止,不迟于…”如:The work must be finished by Friday.
        4、时间介词during与for的用法辨析
        当所指的时间起止分明时用介词during如:He swims every day during the summer.
        如果一段时间不明确则用介词for如:I haven’t seen her for years.
        5、时间介词till与until用法的异同
        till和until用在肯定句中,均可表示“直到…为止”,如:I will wait till(until)seven o'clock.
        till和until用在否定句中,均可表示“在…以前”或“直到…才”。
        如:Tom didn't come back till(until)midnight.
        till多用于普通文体,而 until则用于多种文体,并且在句子开头时,用until而不用till如:Until he comes back,nothing can be done.
        注意:在last, next, this, that, some, every 等词之前一律不用介词。
        二、表示方位的介词
        常用的表示方位的介词用法及辨析如下:
        1、方位介词on, over, above的用法辨析
        介词on表示一物放在另一物上面,两者紧贴在一起,如:The book is on the table.
        介词over表示一种垂直悬空的上下关系,即“在…上方”,如:Is there any bridge over the river?
        介词above表示一般的“高于…”,“在…之上”,如:There was an electric clock above his bed.
        2、方位介词under与below的用法辨析
        介词under是over的反义词即“在…下方”,如:They were seen under the tree.
        介词below是above的反义词即“低于…”,“在…之下”,如:They live below us.
        3、方位介词across,、through、over,、past的用法辨析
        介词across着重于“从一头或一边到另一头或另一边”,强调从表面穿过。
        如:She went across the street to make some purchases.
        介词through着重于“穿越”,强调从一定的空间内穿过。
        如:The sunlight was coming in through the window.
        介词over多表示从“上方越过”,如:He failed to go over the mountain; he had to go round it.
        介词past表示从“面前经过”,如:Someone has just gone past the window.
        4、地点介词at与in的用法辨析
        介词at表示较小的地方,如家、村、乡村等,如:He lives at a small village.
        介词in表示较大的地方,如大城市、国家、洲等,如:He lives in Beijing.
        5、表示东南西北的时候,地点介词in、on、to的用法辨析
        介词in表示“包含”如:Beijing is in the north of China.
        介词on表示“紧邻”如:Canada lies on the north of the U.S.
        介词to表示“没接触”如:France lies to the south of England.
        三、表示方式、手段、或工具的介词by,in,on,with.
        1、by,in,on,表示交通方式。用by 时,交通工具前不用任何词;用 in和on 时,交通工具前用冠词或形容词性物主代词。例如by car=in a car,by bike=on a bike.
        2、表示手段或工具,with后跟具体工具,如I write with a pen;in表示使用某种语言或墨水、颜色等原料,例如:in English.
        四、介词的固定搭配
        across from在对面   look for 寻找  look after 照顾 get on with 与某人相处
        agree with 同意(某人)   arrive at(in) 到达 ask for 询问   begin…with 从……开始 believe in 相信    break off 打断   break out 爆发 bring down 降低   bring in 引进 bring up 教育,培养   build up 建起 burn down 烧光   call back 回电话 call for 要求约请    call on 拜访 访问   care for 喜欢 carry on 继续开展   carry out 实行开展 check out 查明 结帐    come about 发生,产生   come out 出来   come to 共计 达到 compare…with 与……比较   compare to 比作 cut off 切断   date from 始于 depend on 依靠   devote to 献于 die out 灭亡   divide up 分配 dream of 梦想   fall off 下降 fall over 跌倒   feed on 以……为食 get down to 专心于   get through 通过
常见考法
        对于介词的考察,通常是以单项选择或完形填空形式考查介词用法,尤其是几个易混淆的代词。另外,介词与动词和形容词构成的固定搭配也是常见的考试内容。
误区提醒
        1、掌握介词固定搭配
        2、准确把握介词及介词短语的基本意义和用法。
        典型例题1:Peter usually gets up early     the morning.
                A  in     B on   C  at     D  of
         解析;这是2008年北京市的一道中考题,本题考查时间介词的用法。“在早上”应为in the morning.
答案:A
典型例题2:-How do you usually go to school?
         -      my bike.
        A  By    B  In     C  On
        解析;  虽然介词by表示“乘坐”,但是它所接的名词前没有限定词,即by bike.而本题中bike 前有限定词my,这时应用on.
答案:C

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