过去完成时和现在完成时:1.-Have you finished your homework today? _yes,I have(finished my homework). 现在完成时表示到前为止以发生的事情,时间立足于现在,而过去完成时的立足点为过去,必须强调是过去的过去. He said he had finished his homework.2.主将从现:主将从现就是指时间和条件状语从句中，表示将来的时候,主句用一般将来时,从句用一般现在时。 1、条件状语从句时态呼应为主将从现。例：He will go to the park if it doesn't rain tomorrow.2、时间状语从句的时态呼应为主将从现。例：I will call you as soon as I get to the airport.
主句从句:英语中六大从句用法总结 1.主语从句 1）主语从句可直接位于主语的位置，如果从句较长，谓语又较短，可用it作形式主语，而将从句放在句末。常见的句型有： *It is a fact\a pity\a question\good news that... *It seems\appears\happened\has turned out that... *It is clear\important\likely\possible that... *It is said\reported\estimated\has been proved that... It is said that comic books create a connection between people of the same generation. It seems that the performance is very useful. 2)what引导的主语从句表示“...的东西时”，一般不用it作形式主语。 What we lack is experience. 3)what,who,when,why,whether等词含有各自的疑问意义，但它们引导的主语从句，都用陈述语序。 How the plan is to be carried out should be discussed again. I did know why I felt like crying. 2.宾语从句 1）宾语从句可位于及物动词、介词和某些形容词后。连词that常可省略。介词后一般接疑问词引导的宾语从句。in that(因为),except that(除了),but that(只是）已构成固定搭配，其他介词后一般不接that引导的宾语从句。 *I promised that I would change the situation. *All this is different from what American young people would say about friendship. *He is certain that watching so much television is not good for children. *This article is well-written except that it is a bit too long. 2)宾语从句后如有宾补，要用形式宾语it来代替，而把宾语从句移至宾补之后。 He has made it clear that he would not change his mind. 3)在think,believe,suppose,expect等动词后的宾语从句中，如果谓语是否定的，一般将否定词移至主句谓语上，宾语从句则变成肯定形式。 He didn't think that the money was well spent. 3.表语从句 表语从句出现在结构为“主语+系动词+表语从句”的句子中。表语从句除可用that,what,when,why,whether,how等引导外，还可由because,as if(though)等引导。that常可省略。如主句主语为reason,只能用that引导表语从句，不可用because. Perhaps the most important thing to remember is that there is no one common type of life in America. The reason why so many people died there is that there were not enough food supplies. It looks as if successful international cultural communication will make the world smaller. 4.同位语从句 同位语从句用于对前面出现的名词作进一步说明，一般用连词that引导，由于先行名词的意义不同，也可用whether,who,when,where,what,why,how等引导。常见的先行名词有fact,idea,belief,news,hope,conclusion,evidence,suggestion,order,problem,report,decision.有时由于谓语较短，将同位语从句位于谓语之后。 She finally made the decision that she would join the fashion show. I had no idea how many books I could borrow at a time. The news came that their team had won the championship. 5.定语从句 定语从句所修饰的先行词可以是名词或代词，也可以是一个句子。定语从句通常位于先行词之后，由关系代词或关系副词引导。 *限制性定语从句 限制性定语从句修饰先行词，对先行词起修饰作用，紧接先行词之后，无逗号，若省去，原句意思不完整。引导定语从句的关系代词有who,whom,whose,which,that等。who,whom,whose用于指人，whose有时也可指物，相当于of which；which用于指物；that既可指人也可指物，但只用于限制性定语从句中。关系代词除了引导定语从句，替代先行词外，还在从句中担任主语、宾语、定语等。 The computers and cables which make up the Internet are owned by people and organizations. Those who live alone or who are sick may have trouble in getting close to other people. The girl whose parents died in an accident is living with her grandmother. 1)当先行词是all,anything,everything,something,nothing等不定代词或先行词前有first,last,any,few,much,some,no,only以及形容词最高级修饰时，只能用关系代词that引导从句。 That is all that I've heard from him. He's the first person that I'm going to interview this afternoon. 2)关系代词的省略 在从句中作宾语的关系代词常可省略。关系代词紧跟介词，作介词宾语时不可用that，只可用which或whom引导从句，并且不可省略，但当介词位于宾语从句句末时，作为介词宾语的关系代词仍可用that，也可省略。 This is one of those things with which we have to put up. This is one of those things (which\that) we have to put up with. 3)引导定语从句的关系副词有when,where,why等。关系副词在从句中作状语，意义上相当于一个“介词+which”的结构。 Even in comic books where(=in which) there are no words,the stories are fully expressed through the drawings. No one knows the reason why(=for which) he was so angry that day. 5.定语从句 *非限制性定语从句 非限制性定语从句既可修饰先行词，也可修饰整个主句，起补充说明作用，与主句之间有逗号隔开，若省去，原句意思不受影响。不可用that引导非限制性定语从句。关系词不可省略。 Every object has a gravitational pull,which is rather like magnetism. *“介词+which\whom\whose”引导的定语从句 “介词+which\whom\whose”可引导限制性定语从句，也可引导非限制性定语从句，该结构中介词的选择取决于从句谓语动词的固定搭配，或先行词的习惯搭配。 This is the computer on which he spent all his savings It is written by a person with whom we are all familiar. *as引导的定语从句 as引导的定语从句主要用于“such...as”及“the same...as”的结构中，代替先行词是人或物的名词。as引导非限制性定语从句时，代替整个主句，从句可位于主句之前、之后或中间。 These are not such problems as can be easily solved.(as代替先行词problems) As is mentioned above,no single company or group can control what happens on the Internet.(as代替主语) 6.状语从句 *时间状语从句 引导时间状语从句的从属连词和词组有： 1）when,whenever,while,as,after,before,since,till,until,once等。 We have learnt quite a lot about it since we came here. 2)as soon as,hardly(scarcely)...when,no sooner...than,each(every) time,the moment,immediately(that)等。 As soon as I sent an e-mail message,I received positive responses. The moment he heard the good news,he jumped with joy. *地点状语从句 引导地点状语从句的连词是where,wherever. Wherever she went,she took her little daughter with her. *原因、结果和目的状语从句 1）引导原因状语从句的从属连词有：because,as,since,now(that),seeing that,considering that,in that等。 Considering that he is a freshman,we must say he is doing well. 2)引导结果状语从句的连词有：so...that,such...that ,so that,that,so等。 Mickey Mouse is so attractive that the children are reluctant to leave. 3)引导目的状语从句的连词有：so that,in order that,for fear that,lest等，从句常使用may,might,can,could,would等情态动词。 We got up early this morning so that we could catch the first bus to the railway station. *条件和让步状语从句 1）引导条件状语从句的连词和词组有if,unless,as(so) long as,on condition that,in case,provided(providing) that,supposing等。 As long as you have the right equipment,you can use a telephone line to transmit computer data. 2)引导让步状语从句的连词和词组有though,although,whether,even though,even if,no matter what(when,how...),whatever(whenever,wherever,however....)等。though,even if等引导状语从句可转换成含有as的部分倒装结构，具有强调意义。其结构为“形容词（副词、动词、名词）+as+主语+谓语”。 No matter what you may say,I would not change my mind. Young as he is,he is quite experienced in this work.(=though he is young) Child as he is,he can speak English fluently.(=though he is a child) *方式状语从句 引导方式状语从句的连词有as,just as,as if,as though等。as if,as though引导的状语从句中，谓语动词常用虚拟语气，表示与事实相反。 The young man made the experiment just as the teacher had taught him. Everything went on as usual as if nothing had happened.3.a little,a few,little,few:(a) few + 可数名词, (a) little + 不可数名词 a few / a little 为肯定含义，还有一点 few / little 为否定含义，没有多少了。 He has a few friends. 他有几个朋友。 He has few friends. 他几乎没有朋友。 We still have a little time. 我们还有点时间。 There is little time left.几乎没剩下什么时间了。 典型例题: Although he 's wealthy，he spends___ on clothes. A. little B. few C. a little D. a few 答案： A. spend所指的是钱，不可数，只能用little或 a little. 本句为although引导的让步状语从句，由句意知后句为否定含义，因此应用little表示几乎不。 固定搭配: only a few (=few) not a few (=many) quite a few (=many) many a (=many) Many books were sold. Many a book was sold. 卖出了许多书。3.(补充了个another的用法)other及其变化形式在初中教材中多次出现，而且它的变化形式很多，有以下几种：the other, others, the others, another 等。它们的用法现归纳如下； 1.other可作形容词或代词，做形容词时，意思是“别的，其他”，泛指“其他的（人或物）”。如： Do you have any other question(s)? 你还有其他问题吗？ Ask some other people. 问问别人吧！ Put it in your other hand. 把它放在你另一只手里。 2.the other指两个人或物中的一个时，只能用the other，不能用another，此时的other作代词。如： He has two daughters. One is a nurse, the other is a worker. 他有两个女儿，一个是护士，另一个是工人。 the other后可加单数名词，也可加复数名词，此时的other作形容词。如： On the other side of the street，there is a tall tree. 在街道的另一边，有一棵大树。 Mary is much taller than the other girls. 玛丽比其他的女孩高得多。 He lives on the other side of the river. 他住在河的对岸。 3.others是other的复数形式，泛指“另外几个”，“其余的”。在句中可作主语、宾语。如： Some of us like singing and dancing, others go in for sports. 我们一些人喜欢唱歌和跳舞，其余的从事体育活动。 Give me some others, please. 请给我别的东西吧！ There are no others. 没有别的了。 4.the others意思是“其他东西，其余的人”。特指某一范围内的“其他的（人或物）”。是the other的复数形式。如： Two boys will go to the zoo, and the others will stay at home. 两个男孩将去动物园，其余的留在家里。 the others=the other +复数名词，这在第2条中已经有所介绍。 5.another=an+ other，既可作形容词，也可作代词，只能用于三个或更多的人或物，泛指同类事物中的三者或三者以上的“另一个”，只能代替或修饰单数可数名词。如： I don’t like this one. Please show me another. 我不喜欢这一个，请给我看看另一个。 I have three daughters. One is a nurse, another is a teacher and another is a worker. 我有三个女儿。一个是护士，另一个是教师，还有一个是工人或许你会看得眼花,但对你非常有帮助(PS:我是初1的,但我英语学得很好)
|
