Do you know _____ to get to the airport? [ ]A．what B．how C．which -七年级英语
[db:作者] 2019-12-25 00:00:00 互联网
题文
Do you know _____ to get to the airport?
A. what
B. how
C. which
题型：单选题 难度：中档
答案
B
据专家权威分析，试题“Do you know _____ to get to the airport? [ ]A．what B．how C．..”主要考查你对 连接副词，宾语从句 等考点的理解。关于这些考点的“档案”如下：
连接副词宾语从句
考点名称：连接副词
连接副词： 可分为两类，一类是用于连接句子或从句，常见的有therefore, otherwise, however, moreover, still, thus, meanwhile等； 另一类是用于引导从句或不定式，主要有when, why, where, how等。 例如：We all tried our best; however, we lost the game. Tell me when we shall leave. I do not know how to find him.
连接副词的特点： 一、连接句子或从句的连接副词 连接副词的性质类似于并列连词，使用时其前通常用分号或句号； 若其前用逗号，则通常带有并列连词(如and)。如： I don't like it; besides, it's too expensive. 我不喜欢它，而且也太贵了。 We all tried our best; however, we lost the game. / We all tried our best. However, we lost the game. 我们都已尽了最大的努力，不过我们还是输了。 注意，有的连接副词(如however等)后通常有逗号与句子的其他成分隔开。另外，有的这类副词还可位于句中或句末： Peter is our youngest child, and we have three others besides. 彼昨是我们最小的孩子，我们另外还有三个孩子。 He may, however, come later. 不过，他也许一会儿就到。 We all tried out best. We lost the game, however. 我们都已尽了最大的努力，不过我们还是输了。
二、引导从句和不定式的连接副词 用于引导从句(名词性从句)或不定式的连接副词主要有when, why, where, how等。如： Tell me when we shall leave. / Tell me when to leave. 告诉我什么时候离开。 I don't know how I can find him. / I don't know how to find him. 我不知道如何找到他。 Where we can get the money is just our problem. / Where to get the money is just our problem. 到哪里去弄到这笔钱正是我们头痛的事。 That's why he speaks English so well. 那就是他为什么英语讲得这么好的原因。 注：连接副词why 后不能不定式，如可说 I don't know why I must leave.(我不知道我为什么必须离开)，但不能说 I don't know why to leave。
连接副词的句法特征： 所谓连接代词和副词，实际上就是我们以前学过的疑问代词和副词，如who, whose, whom, what, which, when,where, why,how以及由how构成的词组。 1.连接副词起对等连接词的作用,连接两个句子或子句,如: however, so, then,moreover,concequencely,hence,also,besides,,otherwise,therefore,thus等。 I feel a bit tired. However, I can hold on.我有点累了,但我能坚持下去。 They talked about it for hours. Finally, they decided to go。他们对此商量了好几个小时,最后他们决定去。
2.连接副词通常位于子句的句首,有的也可位于句中。 They talked about it for hours. Finally, they decided to go。他们对此商量了好几个小时,最后他们决定去。 finally作为连接副词,放在句子的句首。 I have never been to Wales. I, therefore, don't know much about it.我从未去过威尔斯,因此我对它知道的不多。 therefore作为连接副词,位于句子的句中。
3.有些连接副词的含义彼此相同或相近,在使用时可以互相替换,而不会改变原句的含义。 The weather was cold. Therefore(Thus), we stayed home.天气寒冷,因此我们待在家里。 therefore和thus的含义相近,因而也可以互相替换。
引导名词性从句的连接词可分为三类： 连接词：that, whether, if, as if, as though（不充当从句的任何成分，但绝不能省略） 连接代词：what, whatever, who, whoever, whom, whomever, whose, which, whichever. 连接副词：when, whenever, where, wherever, how, however, why
不可省略的连词： 1. 介词后的连词 2. 引导主语从句和同位语从句的连词不可省略。 That she was chosen made us very happy. We heard the news that our team had won. 大部分连接词引导的主语从句都可以置于句末，用 it充当形式主语。 It is not important who will go. It is still unknown which team will win the match.
宾语从句的时态: 1.主句是一般现在时，从句根据实际情况使用任何时态。 例句：The headmaster hopes everything goes well. 2.主句是过去时态，从句须用过去时态的某种形式。 例句：She was sorry that she hadn’t finished her work on time. 3.当宾语从句表示的是一个客观真理或者事实时，即使主句是过去时，从句也用一般现在时态。 例句：The teacher told his class that light travels faster than sound. 4. 如果从句的动作发生在主句之前，则从句要用过去完成时态。
宾语从句的语序: A. 宾语从句必须用陈述语序。 False: He is wondering when can he finish this difficult job. Right: He is wondering when he can finish this difficult job. B. 有时候可以用it 作形式宾语，而把真正的宾语从句放在后面。 Bad: I thought that he could finish this job in just two hours impossible. Good: I thought it impossible that he could finish this job in just two hours. C. 带有宾语从句的复合句的否定形式一般是否定主句。 Bad: I think he doesn’t like the English teacher. Good: I don’t think he likes the English teacher. D. 主句一般过去时态，从句也要用过去时态。 False: He wanted to know why he is crying in the corner. Right: He wanted to know why he was crying in the corner
宾语从句的否定转移: 主句的谓语动词是think,believe,imagine,suppose,consider,espect,fancy,guess等。 并且主句的主语是第一人称而且为一般现在时，从句的否定词一般要转移到主句上来,其反义疑问句一般与宾语从句一致。 I don’t think he will come to my party.而不能说成I think he won’t come to my party. 我认为他不会来我的舞会. I don’t believe that man is killed by Jim,is he? 我认为那个人不是Jim所杀的,是不是? 如果宾语从句中有某个含有否定意义的形容词或副词,其反义疑问句要用肯定形式。 We find that he never listens to the teacher carefully,does he? 我们发现他从来不仔细听老师讲课，是不是?
宾语从句中引导词的用法比较 在复合句中作主句的宾语，引导词有： 连词：that (that 常可省略),whether, if 代词：who, whose, what ,which 副词：when ,where, how, why 等。
（一）that引导的宾语从句（在非正式场合that可以省略） 1.可跟that从句做宾语的动词有： say, think, insist, wish, hope, demand, imagine, wonder, know, suppose, see, believe, agree, admit, deny, expect, explain, order, command, feel, dream, suggest, hear, mean, notice, prefer, request, require, propose, declare, report等。 例句：The boy believes that he will travel through space to other planets. 注意事项：当主句谓语动词是 think, believe, suppose, expect 等词，而宾语从句的意思是否定时，常把否定转移至主句表示。 例句：I don’t think it is right for him to treat you like that.
2.在以下情况中that不能省略 a.当句中的动词后接多于两个由that引导的宾语从句时，第一个that可省，但后面的that不可省。 例句：He said (that) you were too young to understand the matter and that he was asked not to tell you. b.当主句的谓语动词与that宾语从句之间有插入语时，that一般不可省。 例句：Just then I noticed, for the first time, that our master was wearing his fine green coat and his black silk cap. c.当that从句是双宾语中的直接宾语时，that不可省。 例句：I can’t tell him that his mother died. d.注:许多带复合宾语的句子，that引导的宾语从句经常移到句子后部，而用it作形式宾语。 例句：I find it necessary that we should do the homework on time.
（二）由whether,if 引导的宾语从句 1.由whether(if)引导的宾语从句，实际上是一般疑问句演变而来的。意思是“是否”。宾语从句要用陈述句语序。 一般说来，在宾语从句中whether与if可以互换使用，但在特殊情况下if与whether是不能互换的。 例句：I wonder whether(if) they will come to our party.
2.只能用whether，不能用if引导的宾语从句 a.在带to的不定式前 例句：We decided whether to walk there. b.在介词的后面 例句：I’m thinking of whether we should go to see the film. c.在动词后面的宾语从句时 例句：We discussed whether we had a sports meeting next week d.直接与or not连用时 例句：I can’t say whether or not thet can come on time.
3.只能用if不能用whether引导的宾语从句 a.if引导条件状语从句，意为“如果” 例句：The students will go on a picnic if it is sunny. b.if引导否定概念的宾语从句时 例句：He asked if I didn’t come to school yesterday. c.引导状语从句even if（即使）和as if（好象）时 例句：He talks as if he has known all about it.
if,whether在宾语从句中的区别 a.if和whether在作“是否”解时,引导宾语从句常放在动词know,ask,care,wonder,find out等之后,介词后一般不用if b.少数动词,如:leave,put,discuss,doubt后的宾语从句常用whether. c. whether后可以加or not,但是if不可以. d.在不定式前只能用whether. （如：I can’t decide whether to stay. 我不能决定是否留下。） e.避免歧异时,我们常用whether而不用if.
（三）连接代词和连接副词引导的宾语从句 这样的宾语从句实际上是由特殊疑问句变化而来的，宾语从句要用陈述句语序。 用于这种结构的动词常常是：see, say, tell, ask, answer, know, decide, show, find out, imagine, suggest, doubt, wonder, discover, understand, inform, advise等。 1.英语中的连接代词有：who,whom,whose,which,what,在句中担任主语、宾语、定语或者表语。 例句：Can you tell me whom you are waiting for? 2.英语中的连接副词有：when,where,why,how，在句中担任状语的成分。 例句：None of us knows where these new parts can be bought.
简化宾语从句常用六法： 方法一： 当主句谓语动词是hope， decide， wish， choose， agree， promise等， 且宾语从句的主语与主句主语一致时，宾语从句可简化为不定式结构。 例如： Li Ming hopes he will be back very soon. →Li Ming hopes to be back very soon. We decided that we would help him. →We decided to help him.
方法二：当主句谓语动词是know， learn， remember， forget， tell等动词， 且主句主语与从句主语一致时，宾语从句可简化为“疑问词+不定式”结构。例如： She has forgotten how she can open the window. →She has forgotten how to open the window. 注：当主句谓语动词是tell， ask， show， teach等动词， 且后带双宾语，从句主语和间接宾语一致时，宾语从句可简化为“疑问词+不定式”结构。例如： Could you tell me how I can get to the station？ →Could you tell me how to get to the station？
方法三：当主句的谓语动词是order（命令），require（需要）等时， 如果主句和从句的主语不一致，宾语从句可简化为“名词（代词）+不定式”结构。例如： The headmaster ordered that we should start at once. → The headmaster ordered us to start at once.
方法四：某些动词后的宾语从句，可以用介词加动名词（短语）等其他形式简化。例如： He insisted that he should go with us. →He insisted on going with us. The poor boy doesn’t know when and where he was born. →The poor boy doesn’t know the time and the place of his birth.
方法五：某些动词后面的宾语从句可转化为“宾语+V-ing形式（作宾语补足语）”结构。例如： Liu Ping found that there was a wallet lying on the ground. → Liu Ping found a wallet lying on the ground.
方法六：动词seem后的宾语从句，也可以用不定式（短语）来简化，但句型需要进行适当的变化。例如： It seemed that the boys were going to win. →The boys seemed to win. 除上述方法外，还有一些特殊句式的转化。例如： I found that it was difficult to learn English well. →I found it difficult to learn English well. Soon we found that the ground was covered with thick snow. →Soon we found the ground covered with thick snow. They found that the box was very heavy. →They found the box very heavy
