1、八：名词性从句1. 由that 引导的名词性从句1）由从属连词that引导的从句叫做名词性that-从句。 That只起连接主句和从句的作用，在从句中不担任任何成分，本身也没有词义。名词性that-从句在句中可充当主 语、宾语、表语、同位语和形容词宾语，例如： 主语：That he is still alive is sheer luck. 他还活着全靠运气。 宾语：John said that he was leaving for London on Wednesday.约翰说他星期三要到伦敦去。 表语：The fact is that he has not been seen recent
2、ly.事实是近来谁也没有见过他。 同位语：The fact that he has not been seen recently disturbs everyone in his office. 近来谁也没有见过他，这一事实令办公室所有的人不安。 形容词宾语：I am glad that you are satisfied with your job.我很高兴你对自己的工作感到满意。2）That-从句作主语通常用it作先行词，而将that-从句置于句末，例如：It is quite clear that the whole project is doomed to failure.很清楚，整个
3、计划注定要失败。Its a pity that you should have to leave.你非走不可真是件憾事。用it作形式主语的that-从句有以下四种不同的搭配关系： a. It + be +形容词+ that-从句It is necessary that 有必要It is important that 重要的是It is obvious that 很明显 b. It + be + -ed 分词+ that-从句It is believed that人们相信It is known to all that从所周知It has been decided that 已决定 c. It +
4、 be +名词+ that-从句It is common knowledge that 是常识It is a surprise that 令人惊奇的是It is a fact that 事实是 d. It +不及物动词+ that-分句It appears that似乎It happens that碰巧It occurred to me that 我突然想起2. 由if, whether引导的名词性从句1）yes-no型疑问从句从属连词if, whether引导的名词性从句是由一般疑问句或选择疑问转化而来的，因此也分别被称为yes-no型疑问句从句和选择型疑问从句，例如：主语：Whether
5、the plan is feasible remains to be proved. 这一计划是否可行还有待证实。宾语：Let us know whether / if you can finish the article before Friday.请让我们知道你是否能在星期五以前把文章写完。表语：The point is whether we should lend him the money.问题在于我们是否应该借钱给他。同位语：They are investigating the question whether the man is trustworthy.他们正在调查他是否值得信赖
6、（的问题）。形容词宾语： Shes doubtful whether we shall be able to come.她怀疑我们是否能够前来。介词宾语： I worry about whether he can pass through the crisis of his illness.我担心他是否能度过疾病的危险期。2）选择性疑问从句 由关联词if/whetheror或whetheor not构成，例如： Please tell me whether / if they are Swedish or Danish. 请告诉我他们是瑞典人还是丹麦人。 I dont care whether
7、 you like the plan or not.我不在乎你是否喜欢该计划。3. 由特殊疑问词引导的名词性从句1）由wh-词引导。Wh-词包括who, whom,. whose, whoever, what, whatever, which, whichever等连接代词和where, when, how, why等连接副词。Wh-从句的语法功能除了和that-从句一样外，还可充当介词宾语、宾语补语和间接宾语等，例如：主语： How the book will sell depends on its author.书销售如何取决于作者本人。直接宾语：In ones own home one
8、can do what one likes.在自己家里可以随心所欲。间接宾语：The club will give whoever wins a prize.俱乐部将给得胜者设奖。表语： My question is who will take over president of the Foundation.我的问题是谁将接任该基金会主席职位。宾语补足语：She will name him whatever she wants to. 她高兴给他起什么名字就取什么名字。同位语：I have no idea when he will return.我不知道他什么时候回来。形容词宾语：Im no
9、t sure why she refused their invitation. 我尚不能肯定她为什么拒绝他们的邀请。介词宾语：That depends on where we shall go.那取决于我们去哪儿。2）Wh-从句作主语也常用先行词it做形式主语，而将wh-从句置于句末，例如：It is not yet decided who will do that job.还没决定谁做这项工作。It remains unknown when they are going to get married. 他们何时结婚依然不明。九：状语从句1 地点状语从句通常由where, wherever
10、引导。Where I live there are plenty of trees.我住的地方树很多。Wherever I am I will be thinking of you. 不管我在哪里我都会想到你方式状语从句通常由as, (just) asso, as if, as though引导。1） as, (just) asso引导的方式状语从句通常位于主句后，但在(just) asso结构中位于句首，这时as从句带有比喻的含义，意思是正如，就像，多用于正式文体，例如：Always do to the others as you would be done by.你希望人家怎样待你，你就要
11、怎样待人。As water is to fish, so air is to man.我们离不开空气，犹如鱼儿离不开水。Just as we sweep our rooms, so we should sweep backward ideas from our minds.正如打扫房屋一样，我们也要扫除我们头脑中落后的东西。2） as if, as though 两者的意义和用法相同，引出的状语从句谓语多用虚拟语气，表示与事实相反，有时也用陈述语气，表示所说情况是事实或实现的可能性较大。汉译常作仿佛似的，好像似的，例如：They completely ignore these facts as
12、 if (as though) they never existed.他们完全忽略了这些事实，就仿佛它不存在似的。（与事实相反，谓语用虚拟语气。）He looks as if (as though) he had been hit by lighting.他那样子就像被雷击了似的。（与事实相反，谓语用虚拟语气。）It looks as if the weather may pick up very soon.看来天气很快就会好起来。（实现的可能性较大，谓语用陈述语气。）说明：as if / as though也可以引导一个分词短语、不定式短语或无动词短语，例如：He stared at me
13、as if seeing me for first time.他目不转睛地看着我，就像第一次看见我似的。He cleared his throat as if to say something.他清了清嗓子，像要说什么似的。The waves dashed on the rocks as if in anger.波涛冲击着岩石，好像很愤怒。3 原因状语从句because, since, as和for 1）because语势最强，用来说明人所不知的原因，回答why提出的问题。当原因是显而易见的或已为人们所知，就用as或 since。 I didnt go, because I was afrai
14、d. Since /As the weather is so bad, we have to delay our journey.2）由because引导的从句如果放在句末，且前面有逗 号，则可以用for来代替。但如果不是说明直接原因，而是多种情况加以推断，就只能用for。 He is absent today, because / for he is ill. He must be ill, for he is absent today4 目的状语从句可以由that, so that, in order that, lest, for fear that, in case等词引导，例如： You must speak louder so that /in order that you can be heard by all. He wrote the name down for fear that(lest) he should forget it. Better take more clothes in case the weather is cold5 结果状语从句常由so that 或 suchthat引导，掌握这两个句型，首先要了解so 和 such与其后的词的搭配规律。比较：so和 such其规律由so与such的不
