名词性从句简要讲义--高三英语一轮复习.docx

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1、名词性从句：主语从句；宾语从句；表语从句；同位语从句 引导名词性从句的连接词可分为三类：连接词：that, whether, if连接代词： what, whatever, who, whoever, whom, whose, which. 连接副词： when, where, how, why主语从句是在复合句中充当主语的从句，通常放在主句谓语动词之前或由形式主语 it代替，而本身放在句子末尾。1. That Taiwan belongs to China is a fact.主语从句2 is said that he cnn speak three languages, it形式主语,th

2、at引导的从句是真正的主语what与that在引导主语从句时的区别】what引导主语从句时在句时在从句中充当句子成分，如主语.宾语.表语，而that在 从句中不作任何成分。例如：1） What you said yesterday is right.2） That she is still alive is a good thing.*【It作形式主语】必背知识点1.1 t + be +形容词 + that从句It is necessary / important/ obvious that-1.2 t + be +-ed 分词 + that 从句It is believed that-It

3、is known to us all that .It has been decided that3.It + be + 名词 + that 从句It is common knowledge that*It is a surprise that .It is a fact that4,lt +不及物动词+ that从句It appears that*It happens that .It is believed that-It is known to us all that .It has been decided that3.It + be + 名词 + that 从句It is commo

4、n knowledge that*It is a surprise that .It is a fact that4,lt +不及物动词+ that从句It appears that*It happens that .人们相信众所周知已经决定是常识令人惊奇的是事实是似乎碰巧It occurred to me thatIt occurred to me thatIt occurred to me that我突然想起宾语从句就是在复合句中作宾语。通常放在主句谓语动词（及物动词）或介词之 后。1.3 he did not know what had happened.（作动词的宾语）2. Our s

5、uccess depends upon how well we can cooperate with one another.（作介词的宾语）【宾语从句中用it作形式宾语】注意：如果主句中有形容词或名词作宾语补足语时，一般用it来作形式宾语，把从句 放在宾补后面。We think it our duty that we should help others.I find it impossible that he can finish the work in two days【语法功能】表语从句在复合句中作表语的名词性从句，放在系动词之后，一般结构是“主语+连系动词+表语从句”。2、可以接表语

6、从句的连系动词有be, look, remain, seem等。例如:1) The question is whether we can make good preparation in such a short time.2) This is why wn cant get the support of the people.3) But the fact remains that we are behind the other classes.4) The reason why he is late for school is that he missed the early bus 同位

7、语从句对于名词进一步解释，说明名词的具体内容，一般由that引导,例如:1) The kings decision that the prisoner would be set free surprised all the people.2) The order that all the soldiers should stay still is given by the general.【同位语在句子中的位置】同位语从句常跟在名词fact, idea, belief, promise, suggestion后面。例如：1 .He got the news from Mary that the

8、 sports meeting was put off.2 .Tom failed, due to the fact that he never worked hard.练习Part L判断从句类型并用下划线画出从句The news that we won the first place excited all of us.1. We were all satisfied with what we did during the performance.2. What ends well is well.3. Goals determine what you are going to be.4.

9、 Whoever leaves the room last ought to turn off the light.5. My dream is that I can enter a key university.6. It is universally acknowledged/recognized that China has become one of the strongest countries in the world.7. Im strongly against the opinion that students carry cellphones to school.8. The

10、 reason why we plant trees is that they can provide us with fresh air.9. What surprises me most is that so many children are addicted to cellphones!Part 2.Challenge yourselves.1. It is known to us that nothing is more important than health.2. We all know that nothing is more important than health.3. We all know the fact that nothing is more important than health.4. What we all know is that nothing is more important than health.