【文章內(nèi)容簡介】 放在句首，which在句中。As we know, smoking is harmful to one39。s sun heats the earth, which is very important to 1）Alice received an invitation from her boss, ___came as a ，不能用 that修飾，而用which.，it 和he 都使后句成為句子，兩個獨立的句子不能單以逗號連接。況且選he句意不通。2）The weather turned out to be very good, ___ was more than we could 答案B。which可代替句子，用于非限定性定語從句，而what不可。That 不能用于非限定性定語從句，it不為連詞，使由逗號連接的兩個句子并在一起在英語語法上行不通。3）It rained hard yesterday, ____ prevented me from going to the park.. 和which在引導(dǎo)非限制性定語從句時，這兩個關(guān)系代詞都指主句所表達(dá)的整個意思，且在定語從句中都可以作主語和賓語。但不同之處主要有兩點：(1）as 引導(dǎo)的定語從句可置于句首，而which不可。(2）as 代表前面的整個主句并在從句中作主語時，從句中的謂語必須是系動詞；若為行為動詞，則從句中的關(guān)系代詞只能用which.。在本題中，prevent由于是行為動詞，所以正確選項應(yīng)為B。As 的用法例 same… as；such…as 中的as 是一種固定結(jié)構(gòu), 和……一樣……。I have got into the same trouble as he(has).，常帶有39。正如39。As we know, smoking is harmful to one39。s is knew, smoking is harmful to one39。s 。例1中的as作know的賓語；例2中，它充當(dāng)從句的主語，謂語動詞know要用被動式。（十）關(guān)系代詞that 的用法(1)不用that的情況(a)在引導(dǎo)非限定性定語從句時。(錯)The tree, that is four hundred years old, Is very famous here.(b)介詞后不能用。We depend on the land from which we get our depend on the land that/which we get our food from.(2)只能用that作為定語從句的關(guān)系代詞的情況(a)在there be 句型中，只用that，不用which。(b)在不定代詞，如：anything, nothing, the one, all, much, few, any, little等作先行詞時，只用that，不用which。(c)先行詞有the only, the very,the same,the last,just修飾時，只用that。(d)先行詞為序數(shù)詞、數(shù)詞、形容詞最高級時，只用that。.(e)先行詞既有人，又有物時。(f)先行詞指物，在主句中作表語時．(g)為了避免重復(fù)．(h)先行詞是the way時舉例：Is this the book that you borrowed in the library?這是你在圖書館借的那本書嗎？Who that break the window should be punished．誰打碎了窗戶都要受到懲罰．All that is needed is a supply of 。Finally, the thief handed everything that he had stolen to the 。（十一）難點分析（一）限制性定語從句只能用that的幾種情況1．當(dāng)先行詞是anything, everything, nothing(something 除外), few, all, none, little, some等代詞時，或者是由every, any, all, some, no, little, few, much等修飾時(1)Have you taken down everything that has said?(2)There seems to be nothing that seems impossible for him in the world.(3)All that can be done has been done.(4)There is little that I can do for ：當(dāng)先行詞指人時，偶爾也可以用who(4)Any man that/.who has a sense of duty won’t do such a (1)The first place that they visited in London was the Big (1)This is the best film that I have very, the only 修飾時(1)This is the very good dictionary that I want to buy，(2)After the fire in his house, the old car is the only thing that he ，偶爾也可以用who(3)Wang Hua is the only person in our school who will attend the meeting？, which等疑問代詞時(1)Who is the man that is standing there?(2)Which is the Tshirt that fits me most?，也有動物或者物體時(1)Can you remember the scientist and his theory that we have learned?（二）關(guān)系代詞as和which引導(dǎo)的定語從句as和which引導(dǎo)非限制性定語從句，有相同之處也有不同之處。具體情況是：1．As和which都可以在定語從句中做主語或者賓語，代表前面整個句子。(1)He married her, as/which was natural.(2)He was honest, as/which we can 引導(dǎo)非限制性定語從句，可放在主句之前，或者主句之后，甚至可以切割一個主句；which引導(dǎo)的非限制性定語從句只能放在主句之后。另外，as有“正如……，正像……”的意思(1)As is known to all, China is a developing country.(2)He is from the south, as we can see from his accent.(3)John, as you know, is a famous writer.(4)He has been to Paris more than several times, which I don’t ：當(dāng)主句和從句存在邏輯上的因果關(guān)系時，常用which(5)Tom was always late for school, which made his teacher , the same修飾時，常用as(1)I have never heard such a story as he tells.(2)He is not such a fool as he looks.(3)This is the same book as I lost last ：當(dāng)先行詞由the same修飾時，偶爾也用that引導(dǎo)定語從句，但是和由as所引導(dǎo)的定語從句意思不同(4)She wore the same dress that she wore at Mary’s 。(5)She wore the same dress as her young sister 。(三）以the way為先行詞的定語從句通常由in which, that引導(dǎo)，而且通?？梢允÷?。(1)The way in which/ that/./ he answered the question was surprising.(四)but有時也可以做關(guān)系詞引導(dǎo)定語從句(1)There are very few but understand his idea.(but= who don’t)(五)區(qū)分定語從句和同位語從句1．定語從句修飾先行詞，它和先行詞是修飾關(guān)系；同位語從句說明先行詞的具體內(nèi)容，是補充說明的關(guān)系(1)The plane that has just taken off is for (2)The fact that he has been dead is 2．定語從句由關(guān)系代詞或者關(guān)系副詞引導(dǎo)，關(guān)系詞在句中充當(dāng)成分，有時可以省略；同位語從句主要由that引導(dǎo)，在句中一般不做成分；句子也可以由when, where, how, why, whether, what等詞引導(dǎo)，充當(dāng)成分(1)The news he told me is true.(2)The news that he has just died is true.(3)The problem that we are facing now is how we can collect so much (4)The problem how we can collect so much money is difficult to ，而定語從句不可以(1)The idea that we could ask the teacher for advice is (2)The idea was that we could ask the teacher for advice.(3)The fact that the earth moves around the earth is known to all.(4)The fact is that the earth moves around the 定語從句（Attributive Clauses）在句中做定語，修飾一個名詞或代詞，被修飾的名詞,詞組或代詞即先行詞。定語從句通常出現(xiàn)在先行詞之后，由關(guān)系詞（關(guān)系代詞或關(guān)系副詞）引出。關(guān)系代詞有：who, whom, whose, that, which等。關(guān)系副詞有： when, where, why等。 關(guān)系代詞引導(dǎo)的定語從句關(guān)系代詞所代替的先行詞是人或物的名詞或代詞，并在句中充當(dāng)主語、賓語、定語等成分。關(guān)系代詞在定語從句中作主語時，從句謂語動詞的人稱和數(shù)要和先行詞保持一致。1）who, whom, that這些詞代替的先行詞是人的名詞或代詞，在從句中所起作用如下：Is he the man who/that wants to see you?他就是你想見的人嗎？（who/that在從句中作主語）He is the man whom/ that I saw 。（whom/that在從句中作賓語）2)Whose 用來指人或物，(只用作定語, 若指物，它還可以同of which互換）, 例如：They rushed over to help the man whose car had broken ，大家都跑過去幫忙。Please pass me the book whose(of which)cover is 。3）which, that它們所代替的先行詞是事物的名詞或代詞，在從句中可作主語、賓語等，例如：A prosperity which / that had never been seen before appears in the 。（which / that在句中作賓語）The package(which / that)you are carrying is about to e 。(which / that在句中作賓語）［定語從句］介詞+關(guān)系詞1）介詞后面的關(guān)系詞不能省略。2）that前不能有介詞。3）某些在從句中充當(dāng)時間，地點或原因狀語的”介詞+關(guān)系詞結(jié)構(gòu)可以同關(guān)系副詞when 和where 互換。例如：This is the house in which I lived two years 。This is the house where I lived two years you remember the day on which you joined our club？ 還記得你加入我們俱樂部的那一天嗎？Do you remember the day when you joined our club？第三篇：高中英語 定語從句講解 練習(xí)高中定語從句講解+練習(xí)（一）定義及相關(guān)術(shù)語1．定語從句：修飾某一名詞或代詞的從句叫定語從句。定語從句一般緊跟在它所修飾的先行詞之后。2．先行詞：被定語從句修飾的詞叫先行詞。3．關(guān)系詞：引導(dǎo)定語從句的詞叫關(guān)系詞。關(guān)系詞有關(guān)系代詞和關(guān)系副詞。關(guān)系代詞有that, which, who, whom, whose, as等；關(guān)系副詞有when, where, why等。關(guān)系詞通常有下列三個作用：A、引導(dǎo)定語從句；B、代替先行詞；C、在定語從句中擔(dān)當(dāng)一個成分。例如：The man who is shaking hands with my father is a ，who is shaking hands with my father 是定語從句，修飾先行詞the man，“who”是引導(dǎo)定語從句的關(guān)系詞，代替先行詞the man，在定語從句中作主語。（二）關(guān)系代詞引導(dǎo)的定語從句1．who 指人，在定語從句中作主語。Th