1.主语从句
①由从属连词引导的主语从句：
Whether the country should build a nuclear power station is something we must discuss.
那个国家是否应该建立核电站……
That light travels in straight line is known to all .光以直线传播
②由连接代词引导的主语从句：
What we need is more time. 我们所需要的是……
Whichever book you choose doesn't matter to me.无论你选哪本书……
Whoever comes will be welcome.无论谁来……
③由连接副词引导的主语从句：
When the plane is to take off hasn't been announced.飞机什么时候起飞……
Where he has been is still a puzzle.他到过哪儿……
How much water is flowing can be measured easily.水的流量是多少……
④关于形式主语 it
▲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……
It is likely that….很可能
▲It + be + -ed 分词+ that-从句
It is believed that…人们相信……
It is known to all that…众所周知……
(注意该句型的变式：It is known to all that the earth goes around the sun.=As is known to all,the earth goes around the sun.=What is known to all is that the earth goes around the sun.)
It has been decided that…已决定……
▲It + 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……
可应用于此句型的名词还有fact / shame / honor / question/pity等。
▲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……
It doesn't matter whether he likes or not.
2.表语从句
可以接表语从句的连系动词有 be, look, remain, seem等等。
The problem is that millions of people die of illnesses caused by smoking.
……数百万人死于由抽烟引起的疾病
The question remains whether we can win the game…..我们是否能赢得这次比赛
That's just what I want. ……我想要的
This is where our problem lies. ……我们的问题所在
The difficulty is how we can help smokers kick their habit……我们如何帮助吸烟的人……
注意：
①表语从句的表现形式除了用从属连词，连接代词和连接副词引导以外，还可以由as, as if，as though引导
Things were not as they seemed.
It looks as though it is going to rain.好象要下雨了。
②另外还要注意以下常用的两种结构：The reason why…is that … (而不用 because)
It ( This, That ) is because…
The reason why he was dismissed is that he didn't work hard. 他为什么被开除是因为他工作不努力。
It is because the tobacco companies want to remain in business.
3.同位语从句
同位语从句一般由 that, whether 等连词引导，常放在 advice, doubt, fact, hope, idea, information, message, news, order, possibility, problem, question, reason, truth, word, suggestion.等名词的后面，说明该名词的具体内容。
The news that he had landed on the moon spread all over the world. 登陆月球…….
I have no idea when he will be back. ……什么时候回来
The thought came to him that Mary had probably fallen ill……Mary也许病了
He must answer the question whether he agrees to it or not.……是否同意
·2021北京高考英语整体难度不大但阅读理解有点难 (2021-6-9 9:41:19)
·2021年高考英语试题解析:试卷结构和试题难度稳定 (2021-6-8 19:23:50)
·2021年高考英语冲刺复习指南 (2021-5-26 11:07:59)
·2021年高考英语作文常用6种开头 (2021-5-17 17:00:38)
·2021高考英语写作最好的模板大全 (2021-5-17 16:58:21)
·免费真题 ·模考试题
2022年上海高考作文题目已公布
2022年湖南高考地理答案已公布
2022年湖南高考生物答案已公布
2022年广东高考地理试题答案已公布
2022年湖南高考生物真题已公布
2022年广东高考真题及答案汇总
2022年浙江高考真题及答案汇总
2022年广东高考生物真题及答案已公布(完整版)
2022年浙江高考政治真题及答案已公布(完整版)
| 国家 | 北京 | 天津 | 上海 | 重庆 |
| 河北 | 山西 | 辽宁 | 吉林 | 江苏 |
| 浙江 | 安徽 | 福建 | 江西 | 山东 |
| 河南 | 湖北 | 湖南 | 广东 | 广西 |
| 海南 | 四川 | 贵州 | 云南 | 西藏 |
| 陕西 | 甘肃 | 宁夏 | 青海 | 新疆 |
| 黑龙江 | 内蒙古 | 更多 | ||
