【導讀】引導的從句，其功同名詞一樣。詞之前或由形式主語it代替，而本身放在句子末尾。從句的連接詞沒有變化。而it引導的強調(diào)句則是對句子某一部分。進行強調(diào)，無論強調(diào)的是什么成分，都可用連詞that。分指人是也可用who/whom。if引導的主語從句不可居于復合句句首。含主語從句的復合句是疑問句時，主語從句不可提前。謂語動詞或介詞之后。動詞＋間接賓語＋賓語從句。that從句的看作原因狀語從句。that從句則放在句尾，特別是在帶復合賓語的句子中。若主句謂語動詞為Think,consider,wuppose,believe,expect,一般結(jié)構(gòu)是“主語＋連系動詞＋表語從句”。

　　

【正文】 second half of his voyage was by far the more dangerous part， during which he sailed round the Cape Horn． 代表 a11， anything， something， nothing， much 時，用 that不用 which， that作賓語可省略。 例如： care anything that has something to do with it． d better do something he prefers to do to please him． is the last time we met each other． came across the woman you told me about yesterday． who 和 whom 引導的從句用來修飾人，分別作從句的主語和賓語。 where 是關(guān)系副詞，用于表示地點的定語從句，而 when用來表示時間。 whose 是關(guān)系代詞，修飾名詞作定語。 例如 : Ford is the person who is most responsible for developing the idea of mass production． knee is the joint where the thigh bone meets the large bone of the lower leg． next morning， when she came down to breakfast ， Mary was beaming with the pleasure of a new， great discovery． visiting professor is a famous scientist whose son studies in my department． 在下列情況，限定性定語從句的關(guān)系代詞可以省略： 1)當關(guān)系代詞在從句中作賓語或表語；或它們在從句中作介詞的賓語，而該介詞又在句末時； 2)當先行詞是 that， all， only， everything， something， nothing 等代詞時，或先行詞前有一個最高級形容詞修飾時； 3)當先行詞前有 only， any， all， first， no， last等修飾時，或先行詞就是 time， moment， way(anyway)， direction， distance 等名詞時，關(guān)系代詞即可省略。 例如： delegation we had been waiting for finally arrived． met the woman you told me about． gave me all she could afford． TV we can see things happen almost at the exact moment they are happening． ? 非限定性定語從句 作用 :對所修飾的成分作進一步的說明，它與主句用 逗號隔開 。 此類從句省略后其余部分仍可成立。 在非限定性定語從句中， which可代表前面的整個句子；代表人時只能用 who， whom，而不能用 that； as也可用作關(guān)系代詞。 例如 : telephone， as we know， was the invention of Alexander Graham Bell． in a damp house for a long time is harmful to one’ s health， which is known to everyone． 狀語從句 時間狀語從句 :主要由 when， whenever， after， before， a5， since， once， as soon as， Until， while 等連詞引導 。 結(jié)果狀語從句 :由 so? that和 such? that連接 讓步狀語從句 :由 though， although， no matter， even if， however， whatever等詞引導 原因狀語從句 :由 as， because， since和 for引導 條件狀語從句 :由 if， whether， as long as， provided that等詞引導 地點狀語從句 :由 where 引導 行為方式狀語從句 :由 as引導 例如： small greenish flowers of the elm tree appear in the Spring, long before the leaves grow. s novels used to be so popular that her books appeared on bestseller lists. balloon is less safe than hot balloon because it may catch fire. acceleration (同樣的加速 ) occurs if the rate of change remains the same over successive equal intervals of time． 狀語從句中的 “主語 +be”可以省略，前提是：從句主語和主句主語一致，且從句謂語“ be”省略后的結(jié)構(gòu)為“連詞 +現(xiàn)在分詞／ 過去分詞介詞短語／形容詞／名詞短語”。 例如： well fitted， glasses can correct most sight defects in healthy eyes． necessary， I would like to see you in your office. seriously wounded， he never plained． 名詞從句 名詞從句包括主語從句、賓語從句，其中有介詞與形容詞的賓語從句、表語從句 和同位語從句。 主語從句 主語從句常出現(xiàn)在 it is+名詞、形容詞、分詞 +主語從句”的形式中 例如： is reported that Taiwanese pop singer Meng Tingwei will hold a solo concert in Shanghai someday this month． must be pointed out that you have failed to meet the deadline． usually happened that I was late because of traffic jams. 主語從句還可用 when， where， how， why， whether等連接副詞，和 who， whom， whose， what， which， whoever， whatever，whichever等連接代詞來引起 例如： to arrange the meeting is not your task． candidate will win the election is the question both political parties are asking． I leave is my own decision. will go to the party won t change my mind of staying at home． 賓語從句 賓語從句可由 that， 疑問代詞或副詞 how， why和 where 等引出。例如： postpone the conference until next month indicated that they were unprepared． a11 the staff agreed with what I said． worried about her because no one was aware of where she had gone． you offer more details except that it happened at night? 由 what， whether， how 引導的賓 語從句可用在介詞后，而由that 引導的從句只跟 but， besides， except， in， save 之后。例如 : can hardly believe in what they have done. doesn’ t know my phone number except that the city code is 021. 一些表語性的形容詞，如： alarmed， amazed， annoyed，astonished， certain， confident， disappointed， glad， pleased， proud， sad， shocked， sure， surprised， worried， 語時，后面可跟由 that， how 等引導的賓語從句。例如： was amazed how he could pass the exam without attending the lectures． is confident that he will pass the Band 6 examination． was surprised how simple his problem is． are all pleased that he will be able to pass the final examination. 表語從句 表語從句對主語的內(nèi)容起解釋和闡述的作用； 若表語從句用 that引起， that起連接作用，不能省略。 表語從句也可用連接詞 how， when， where， why， what引起。 由 because 引起的表語從句通常只用在“ this／ that／ it is because” 結(jié) 構(gòu)中。例如： logarithm(對數(shù) ) is what is known in algebra exponent(代數(shù)的指數(shù) )． thing I admire most about them is that they are hospitable． works too hard； That is why she is exhausted． must point out that where you intend to build a supermarket is where the elderly do exercise every day． 同位語從句 同位語從句是由兩個或兩個以上同一層次語言單位組成的結(jié)構(gòu)，其中前項與后項所指相同，句法功能相同。同位語從句由 that引導，也可由 whether， how， why， where， when 等來引導。 例如： ignored the teacher s instruction that she must study hard． question whether or not I should help him in such a case troubled me greatly． 篇七：英語中六大從句用法總結(jié) 英語中六大從句用法總結(jié) 定語從句所修飾的先行詞可以是名詞或代詞，也可以是一個句子。定語從句通常 *限制性定語從句 限制性定語從句修飾先行詞，對先行詞起修飾作用，緊接先行詞之后，無逗號，若省去，原句意思不完整。引導定語從句的關(guān)系代詞有 who,whom,whose,which,that等。 who,whom,whose 用于指人， whose 有時也可指物，相當于 of which； which用于指物；that 既可指人也可指物，但只用于限制性定語從句中。關(guān)系代詞除了引導定語從句，替代先行詞外，還在從句中擔任主語、賓語、定語等。 The puters and cables which make up the Inter are owned by people and anizations. Those who live alone or who are sick may have trouble in getting close to other people. The girl whose parents died in an accident is living with her grandmother. 1)當先行詞是 all,anything,everything,something,nothing 等不定代詞或先行詞前有 fir