【正文】 義，而且已經(jīng)用了when連接該賓語從句，所以此處只填一個形式賓語it。 cannot figure out ______ quite a number of insects, birds, and animals are dying 答案：C。名詞性從句的功能相當于名詞詞組, 它在復合句中能擔任主語、賓語、表語、同位語、介詞賓語等，因此根據(jù)它在句中不同的語法功能，名詞性從句又可分別稱為主語從句、賓語從句、表語從句和同位語從句。It is not important who will is still unknown which team will win the 作句子主語的從句叫主語從句。Who will win the match is still 。主語從句后的謂語動詞一般用單數(shù)形式。t be able to go to the south to spend our summer vacation.（8）It is still a mystery what caused the accident.（9）It is said that he has gone to shanghai.(=He is said to have gone to shanghai)（10）It is known to all that the gun powder was first invented by the Chinese.（11）It is suggested that the work should be done with great care.（12）It seems that he has seen the film.(=He seems to have seen the film)（13）It happened that the two cheats were there.(=The two cheats happened to be there)小結(jié)（:1)以that 引出的主語從句, is +形容詞/名詞/某些動詞ed + that 從句.（2)在有些that從句中要用虛擬語氣(should+do/should+have done)例句4,5,6,、主語從句的用法主語從句是在復合句中充當主語的從句，通常放在主句謂語動詞之前或由形式主語it代替，而本身放在句子末尾。例如： It is a pity that you didn’t go to see the 作形式主語的結(jié)構(gòu)(1)It is ＋名詞＋從句It is a fact that … 事實是…It is an honor that …非常榮幸It is mon knowledge that …是常識(2)it is ＋形容詞＋從句It is natural that… 很自然…It is strange that… 奇怪的是…(3)it ＋不及物動詞＋從句It seems that… 似乎…It happened that… 碰巧…(4)it is＋過去分詞＋從句It is reported that… 據(jù)報道…It has been proved that… 已證實… (1)if 引導的主語從句不可居于復合句句首。例如：It doesn’t matter whether he is wrong or not.(5)含主語從句的復合句是疑問句時，主語從句不可提前。由連接詞that引導賓語從句時，that在句中不擔任任何成分，在口語或非正式的文體中常被省去，但如從句是并列句時,第二個分句前的that不可省。例如： I insist that she(should)do her work 。She always thinks of how she can work 。例如：Whether there is life on the moon is an interesting 。例如：he studies English every day.（從句用一般現(xiàn)在時）he studied English last term.（從句用一般過去時）I know(that)he will study English next year.（從句用一般將來時）he has studied English since 1998.（從句用現(xiàn)在完成時）當主句動詞是過去時態(tài)（could, would除外），從句則要用相應的過去時態(tài)，如一般過去時，過去進行時，過去將來時等；當從句表示的是客觀真理，科學原理，自然現(xiàn)象，則從句仍用現(xiàn)在時態(tài)。I don’t believe he will do 。從屬連詞：連接賓語從句的從屬連詞主要有that,if,而if和whether引導表示“是否” told me that he would go to the college the next don’t know if there will be a bus any knew whether he could pass the ：連接代詞主要有who, whom ,whose ,what ,whoever ,whomever ,whosever, whatever, ,但what, whatever除了指疑問外, you know who has won Red Alert game?你知道是誰贏得了紅色警報的游戲？The book will show you what the best CEOs should you determined whichever you should buy,a Motorola or Nokia cell phone? 你決定好是買諾基亞還是摩托羅拉的電話了嗎? 連接副詞：連接副詞主要有when,where,why,how,whenever,wherever, didn’t tell me when we should meet you please tell me how you use the new panel?你能告訴我怎么用這個新的操作盤嗎? None of us knows where these new parts can be 大多數(shù)動詞都可以帶賓語從句We all expect that they will win , for members of their team are , told us that they would help us though the whole ,“動詞+副詞”結(jié)構(gòu)也可以帶賓語從句I have found out that all the tickets for the concert have been sold you work out how much we will spend during the trip? 你能計算出這次旅行我們將花費多少錢嗎? 動詞短語也可以帶賓語從句常見的這些詞有:make sure確保 make up one’s mind下決心 keep in mind牢記 Make sure that there are no mistakes in your papers before you turn them ①動詞find,feel,consider,make,believe等后面有賓語補足語的時候, think it necessary that we take plenty of hot water every feel it a pity that I haven’t been to the , have made it a rule that I keep all find it important that we(should)make a quick decision about this .②有些動詞帶賓語從句時需要在賓語與從句前加it 這類動詞主要有:hate, take , owe, have, see hate it when they with their mouths full of will have it that our plan is really take it that you will agree with you start the engine, you must see to it that car is in , 一定要使汽車的離合器處于空擋位置.③若賓語從句是wh類,則不可用it代替We all consider what you said to be discovered what we had learned to be 用wh類的介詞賓語從句We are talking about whether we admit students into our new book is about how Shenzhou 6 manned spaceship was sent up into ,if引導的介詞賓語從句有時候except,but,besides三個介詞后可見到that引導的賓語從句I know nothing about my new neighbor except that he used to work with a ,常用來引導賓語從句的形容詞有: sure,certain,glad,please,happy,sorry,afraid,satisfied,surprised I am sure I will pass the am sorry that I have troubled you so is glad that Li Ming went to see him when he was ,whether在賓語從句中的區(qū)別① if和whether在作“是否”解時,引導賓語從句常放在動詞know,ask,care,wonder,find out等之后,介詞后一般不用if② 少數(shù)動詞,如:leave,put,discuss,doubt后的賓語從句常用whether.③ whether后可以加or not,但是if不可以.④ 在不定式前只能用whether.（如：I can’t decide whether to 。,此時第一個that可以省略,第二個that不可以省略。引導表語從句的關(guān)聯(lián)詞與引導主語從句的關(guān)聯(lián)詞大致一樣，表語從句位于連系動詞后，有時用as if引導。This is where our problem 。例如： The reason why he was late was that he missed the train by one minute this morning.【注意】whether 可引導表語從句，但與之同義的if卻通常不用于引導表語從句。He has bee what he wanted to be ten years 。His suggestion is that we should stay ，我們應該保持冷靜。how I can persuade her to join us in the 。Right: The question is who will travel with me to Beijing : The question is why he cried that在表語從句中不可以省掉。(what 在表語從句中充當賓語)// What I told him was that I would find him a good 。(前文提到Jeanne對老婦人顯得蒼老憔悴深感詫異，說話人對她講述了其中的原因之后，用這一句來進行概括)。“That is because...”與“That is why...”之間的不同在于“That is because...”指原因或理由，“That is why...”則指由于各種原因所造成的后果，例如： He did not see the film last is because he had to help his little sister with her ，那是因為他得幫助他的妹妹做作業(yè)。例如： The news that we won the game is 。試比較下面兩個例句:I had no idea that you were here．（that引導同位語從句，不能省略）Have you got the idea（that）this book gives you of life in ancient Greece？（that引導定語從句，作賓語，可以省略）簡介同位語部分是個句子,就是同位語從句,這種用法比較“固定”,、在復合句中用作同位語的從句叫同位語從句。二、可以跟同位語從句的名詞通常有news，idea，fact，promise，question，doubt，thought，hope，message，suggestion，words（消息），possibility等。）如：l have no idea when he will be back．我不知道他什么時候回來。The thought came to him that maybe the enemy had fled the city．他突然想起可能敵人已經(jīng)逃出城了。賓語：John said that he was leaving for London on 。2）That從句作主語通常用it作先行詞，而將that從句置于句末，例如：It is quite clear that the whole project is doomed to ，整個計劃注定要失敗。Wh詞包括who, whom,.whose, whoever, what, whatever, which, whichever等連接代詞和where, when, how, why等連接副詞。間接賓語：The club will give whoever wins a 。形容詞賓語：I3