【正文】 ner in the park yesterday afternoon who could speak Chinese very well.④一個(gè)句子中帶有兩個(gè)定語從句，其中一個(gè)定語從句的關(guān)系代詞是that ,另一個(gè)則宜用who, 以免重復(fù). 如：1. The student that was praised at yesterday39。s meeting is the monitor who is very modest and works very hard .which與as引導(dǎo)非限制性定語從句的異同一、相同點(diǎn)兩者引導(dǎo)非限制性定語從句時(shí)，可指代主句中的部分或整個(gè)句子的內(nèi)容，在從句中做主語，賓語或表語，位于主句之后有時(shí)可互換。The meeting was put off, as /which was exactly what we wanted.He was a doctor, as/which I knew from his manner.二、不同點(diǎn)1. as可以放在主句前后，也可插入主句之中；而which引導(dǎo)的非限制性從句只能位于主句之后。As is known to all, fish can’t live without water.Air, as we know, is gas.，which后的be動(dòng)詞不可?。籥s而后的be動(dòng)詞可以省略。She told me she won the match, which was a lie.The material is elastic, as (was) shown in the figure.3. which在非限制性定語從句做主語時(shí)可用各類動(dòng)詞做謂語；而as做主語時(shí)，謂語常用系動(dòng)詞，如be, seem, bee等，一般不用其他行為動(dòng)詞。He saw the girl, which delighted him.He didn’t say anything at the meeting , as/which seemed very strange.4. as常用“正如”含義，常用的結(jié)構(gòu)有as we know（眾所周知）；as often happens（正如常發(fā)生的那樣）；as is often the case（情況常常如此）。 as we all can see（正如我們看到的）。 be announced/expected/known/imagined/mentioned/said/shown/reported等。這些結(jié)構(gòu)常放句首，偶爾也可以放句中或句末。As is known to all, China is a developing country.Kate was late for school, as often happened.5. 在非限制性定語從句中which指代主句中某一個(gè)單詞時(shí)，as不可以。My brother enjoyed playing basketball, which he really plays well.Beijing, which he was born in, is our capital.6. “介詞+關(guān)系代詞（介賓代物）”中關(guān)系代詞只能用which。The Travel Agency, with which our pany has been dealing for several years, has opened for new branches. Air is a mixture of gases, of which oxygen forms 21 percent.7. 從句中的謂語動(dòng)詞是否定形式時(shí)，常用which。He can write a letter in English, which I can not.Metal will bear beating with a hammer, which a stone will not，常用whichHe said he had passed the exam, which was untrue.定語從句中關(guān)系代詞省略與保留我們知道，關(guān)系代詞在定語從句中作賓語時(shí)可以省略，但也有幾種特殊情況，關(guān)系代詞不用作賓語也可以省略，同學(xué)們學(xué)習(xí)和使用時(shí)請(qǐng)注意。 　　在下列情況下,引導(dǎo)賓語從句的關(guān)聯(lián)詞可以省略。 　　一、that在定語從句中作表語時(shí)。例如: 　　She is all (that) a teacher should be. 她具備一個(gè)老師應(yīng)該具備的所有條件。 　　二、that在從句中作補(bǔ)語時(shí)。例如: 　　I39。m not the fool(that) you thought me. 我不是你以前所認(rèn)為的那個(gè)傻子了。 　　He is the nicest teacher (that) the students consider him in their school. 他就是學(xué)生認(rèn)為學(xué)校中最好的那個(gè)老師。 　　三、作狀語時(shí)的省略。 　　1. 當(dāng)先行詞是reason,且在定語從句中作原因狀語時(shí),可以用關(guān)系副詞why或關(guān)系代詞that,也可以省略。例如: 　　The reason (why/that) he failed was his laziness. 他失敗的原因是因?yàn)樗麘卸琛?　　That is the reason I did it. 那就是我做那件事的原因。 　　2. 當(dāng)先行詞是way,且在定語從句中作方式狀語時(shí),關(guān)聯(lián)詞可用in which或that,也可以省略。例如: 　　The way(in which/ that) these rades look at problems is 。 　　That was the way(in which / that) she worked the problem out. 她就是用那種辦法解決問題的。 　　3. 當(dāng)先行詞是time時(shí),關(guān)聯(lián)詞可用when, that或省略。例如: 　　The second time (that) I saw him was in 2000. 我第二次見到他是在2000年。 　　I don39。t know the exact time (when/ that) the sports meeting will take place. 我不知道運(yùn)動(dòng)會(huì)舉辦的確切時(shí)間。 　　,關(guān)聯(lián)詞可用where,that或省略。例如: 　　The place(where/ that) we will have our piic is not decided yet. 我們舉行野餐的地點(diǎn)還沒定下來。 　　This is the right place he was 。(注意:句末不可用介詞in) 　　同學(xué)們往往認(rèn)為關(guān)系代詞作賓語時(shí)就一定可以省略,關(guān)系代詞雖作賓語,卻不能省略。 　　一、在介詞+whom /which結(jié)構(gòu)中, whom, which不能省略。例如: 　　Do you know any shops nearby in which I can buy flowers?你知道附近有可以買到花的商店嗎? 　　That is the headmaster with whom my father was talking just 。 　　二、在非限制性定語從句中,作賓語的關(guān)系代詞也不能省略。例如: 　　Mr Green, whom you know, is the tallest in our school. 格林先生是我們學(xué)校里最高的,你也認(rèn)識(shí)他。 　　The elephant is like a spear, as anyone can see. 大象像長矛,任何人都知道。 　　三、在the same ... as, such ... as, as ... as, the same... that結(jié)構(gòu)中, as, that 即使作賓語,也不能省略。例如: 　　I have bought the same bike as you (have). (指同類用as)我買了一輛和你的一樣的自行車。 　　This is the same book that I read the day before yesterday. 這就是我前天讀過的那本書。(關(guān)系代詞that如要換成as, 則指與我讀的書一樣,而不是同一本。) 　　四、當(dāng)and, but, or等連詞連接兩個(gè)或兩個(gè)以上的定語從句修飾一個(gè)先行詞時(shí),關(guān)系代詞第一個(gè)可省略,第二、第三個(gè)等不可省略。例如: 　　This is the book (which) I read yesterday and which I found very interesting. 這就是我昨天讀的那本書,它很有趣。 　　You have many people around you (whom) you always turn to and whom you will never ,你經(jīng)常向他們求助,你永遠(yuǎn)不要忘記他們。 1. 若不給自己設(shè)限，則人生中就沒有限制你發(fā)揮的藩籬。2. 若不是心寬似海，哪有人生風(fēng)平浪靜。在紛雜的塵世里，為自己留下一片純靜的心靈空間，不管是潮起潮落，也不管是陰晴圓缺，你都可以免去浮躁，義無反顧，勇往直前，輕松自如地走好人生路上的每一步3. 花一些時(shí)間，總會(huì)看清一些事。用一些事情，總會(huì)看清一些人。有時(shí)候覺得自己像個(gè)神經(jīng)病。既糾結(jié)了自己，又打擾了別人。努力過后，才知道許多事情，堅(jiān)持堅(jiān)持，就過來了。4. 歲月是無情的，假如你丟給它的是一片空白，它還給你的也是一片空白。歲月是有情的，假如你奉獻(xiàn)給她的是一些色彩，它奉獻(xiàn)給你的也是一些色彩。你必須努力，當(dāng)有一天驀然回首時(shí)，你的回憶里才會(huì)多一些色彩斑斕，少一些蒼白無力。只有你自己才能把歲月描畫成一幅難以忘懷的人生畫卷。學(xué)習(xí)參考