一、概念：
1. 标出下列句子的主语
1) Jim is good at playing the piano. 2) To see is to believe. 3) Smoking is bad for health. 4) What he has said is true.
主语：是一个句子说明的_________________,即叙述的主题，一般位于______ 。 5) That he will succeed is certain.
6 ) Whether he will come makes no difference. 7）What we need is more time.
主语从句: 在主从复合句中_____________的从句就是主语从句, 它是____________从句之一。
◆思考：如何将下列两组分句分别合并成一句话？
He passed the exam. When will he come?
It made the teacher happy. It is not clear. 2. 主语从句的引导词
1) • 从属连词: that, whether/if
That he will come is certain. Whether he will come is uncertain.
____________只起连接作用，本身无意义，不充当任何成分，但______________。 whether/if 表___________，只起连接作用，不做成分。
2) • 连接代词：what, who, whom, whose, which,whatever, whoever, whichever等。它们在主语从句中既起连接作用，又在从句中充当主语、宾语、表语或定语。
Who will go makes no difference.
What we need is more time.
Which book I shall choose hasn’t been decided.
Whoever breaks the law will be punished. (whoever=anyone who) Whatever I have is yours. (whatever=anything that)
• 连接副词: when, where, how ,why. 在从句中作_________。
When we will leave hasn't been decided. How she keeps healthy is a secret. Why he cries is not clear.
Where the meeting will be held is not known. 3. 必须用“it”作形式主语的主语从句
(1) It +be+形容词（obvious, true, surprising, wonderful, possible, likely, certain) +that 从句
• It is certain that he will win the match. •It isn't likely that I should accept such an offer.
(2) It + be +过去分词(said, reported, thought, expected, decided, announced,suggested等)+that从句
• It is reported that 20 people were killed in the accident.
(3) It + be +名词词组(a pity, a shame, good news, an honor,no wonder等)+that从句
• It is a fact that he cheated in the exam.
(4) It+动词/动词短语(seem, appear, happen, matter, turn out, occur to等)+that 从句
•It seems that he is not himself today.
•It suddenly occurred to her that Joe was afraid of being alone.
★主语从句中用来表示惊奇、不相信、惋惜、理应如此等语气时，谓语动词用虚拟语气
”should+动词原形“，常用句型有：
◆It is necessary/important/surprising/strange/natural等+that从句 It is suggested/requested/ desired/ordered/demanded等+that从句 ◆It is necessary that we (should) have breakfast. It was suggested that we (should) put off the meeting
二、使用主语从句的注意事项 When will he come is not known.(×) When he will come is not known.(√)
→规律一：从句的语序_________________________ He will not come to the meeting this evening is true. (×) That he will not come to the meeting this evening is true.(√)
→规律二、连词that 在从句中无实际意义，但______________。 When he was born are a puzzle.(×) When he was born is a puzzle.(√)
→规律三、主语从句的谓语动词多用______________人称形式。 1. What he needs ___ that book. 2. What he needs ____some books.
→规律四、what 引导的主语从句，要根据表语决定主句动词的单复数形式。 二、实战演练
单选：【江苏】1.It is not a problem ____ we can win the battle; it's just a matter of time. A. That B. whether C. what D . Which
【四川】2. _____ a girl put her card into a machine outside a bank in London on June 27, 1967means the world 's first ATM was born.
A. When B. How C. What D. That
【北京】3.Your support is important to our work. _____ you can do helps. A. That B. Which C. what D. Whatever
【重庆】4. _____ struck me most in the movie was the father's deep love for his son. A. That B. It C. What D. Which
【江西】5.____ one of you breaks the window will have to pay it. A. Whoever B. Whatever C. Whichever D. Wherever
填空：【天津】6.___________ lifestyle is the most beneficial to our health is still unknown. 【新课标全国I】7. It is by no means clear____________ the president can do to end the strike.
【陕西】8. It remains to be seen__________ the newly formed committee's policy can be put into practice. 单句写作
1._________________________________________(为什么恐龙突然消失) remains a mystery.
2._________________________________________(你和同学相处是否融洽)will affect you mood.
3.The traveler lost his way in the woods, and _________________________(另事情更糟糕的是天快黑了)
4.大家相信善行会带给我们好运。
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※考法总结
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