句子的結構

她得了冠軍，真是令人驚異。
(2)由what, whatever和whoever等代詞引導：
what she said just now is correct.
她剛才說的話很對。
what caused the air disaster is under the investigation.
究竟是什么導致了這次空難，正在調查。
whatever you have seen must be kept in your mind.
不管你看到什么，都要記在心里。
whoever breaks the world record will get one million yuan as an a ward.
任何打破世界紀錄的人將得到一百萬元獎金。
(3)由連接副詞whether, how, when, why, where引導：
when the sports meet will be held isn't decided.
什么時候開運動會還沒有定下來。
whether she can pass the exam is not sure.
她是否能夠通過考試還沒有把握。
how he arrived there is unknown to anybody.
他是如何到達那里的，沒有人知道。
why the fire broke out here in the workshop remains a mystery.
車間這里為什么會發生火災仍是個謎。
注意：當主語從句過長而謂語較短時，通常用代詞it作形式主語， 而把從句放在句尾。
it remains a mystery that the air disaster took place that day.
那天發生的空難仍然是個謎。
it is uncertain whether we'll attend the meeting or not .
我們是否參加那個會議還沒有確定。
2.賓語從句
這類從句常是這種結構：主句+引導句+從句，從句中始終用陳述語序。
(1)由that引導(通常that可以省略)
she is very sure that she can work out the problem.
她確信她能解出這道題。
she told me that she could finish it herself.
她跟我說她可以自己完成這件工作。
(2)由what, who, which等關系代詞引導
we don't understand what you said just now.
我們不明白你剛才說的話。
tell me which you want?
告訴我你要哪一個?
do you know who is the man over there?
你知道那邊那個人是誰嗎?
(3)由how, when, why, where引導賓語從句
they wanted to know when the building would be set up.
他們想要知道這座樓房何時建成。
will you please tell me how i can get to the park?
請告訴我怎么走才能到公園好嗎?
i wonder where she is now.
我想知道她現在在哪兒?
i don't know why you dislike physics.
我不知道為什么你討厭物理。
(4)一些形容詞之后所接的句子也是賓語從句。這些形容詞有：glad, sorry, sure , afraid, worried, angry, aware, confident等。
i'm glad that you've helped me a lot.
很高興你給我這么大的幫助。
we are confident that we can beat them.
我們有信心打敗他們。
the father was angry that his son failed to pass the maths exam.
這位父親對他的兒子數學不及格很惱火。
i'm not sure if she has finished the painting.
我不清楚她是否完成了那幅作品。
注意：當賓語從句過長時，可用it作形式賓語而將從句放在句子后 面。
she thought it pity that i had missed the chance.
她認為我錯過了那個機會非常可惜。
i found it very easy that i worked out the problem .
我覺得很容易地就做出了這道難題。
the manager made it clear that your idea was impossible .
經理已明白地指出你的想法不能實現。