【正文】 s surprises, the cave was found by chance on a day where some people were walking in the area． Some of the paintings were at least 3,000 years old． However, the site of the cave was so very difficult to reach that it takes a long time before researchers could visit it． The reason that the exact location of the site is kept secret is that the cave needs to be protected from being visited by visitors which don39。故填which。故填whose。There was a time when．．．“有一段時間……”。6．(2019這里含有一個定語從句，先行詞是all the food，關(guān)系詞在從句中作主語，指物，可用that或which，先行詞被all所修飾，只能使用that，不能使用which，且what不能引導定語從句，所以what改為that。Ⅱ．單句改錯(每小題僅有1處錯誤)1．(202012．(2017句中先行詞為an age(一個時代)，且從句中缺少時間狀語，所以關(guān)系詞用when。故填who。6．(2019句意：中國古代有一位畫家，他的畫幾乎栩栩如生。故填whose。斯隆爵士的8萬件藏品構(gòu)成了1759年開館的大英博物館的核心藏品。(二)假冒偽劣的定語從句1．有從無主式(誤)my friend Jane, who is very friendly to us classmates．(正)My friend Jane is very friendly to us classmates．(正)My friend Jane, who is very friendly to us classmates, has a variety of hobbies．第一句虎頭蛇尾，屬于有從無主式的句子，即有從句但沒有主句。3．如果先行詞指物，定語從句中缺少主語或賓語，限制性定語從句中用which/that；非限制性定語從句中用which；缺少表語，限制性定語從句用that；非限制性定語從句用which。 This is the second time (that) the president has visited the country．這是總統(tǒng)第二次訪問這個國家了。 考點六定語從句中的主謂一致1．關(guān)系代詞作從句的主語時，從句中謂語動詞的人稱和數(shù)要與先行詞保持一致，先行詞是句子時，從句的謂語動詞用單數(shù)。3．a(chǎn)s常用在下列習慣用語中。John invited about 40 people to his wedding，most of whom are the family members．約翰邀請了大約40人參加他的婚禮，他們當中絕大部分是家庭成員。只能在定語從句中作原因狀語，可用for which代替，有時也可以省略。自那時以來，教育制度已經(jīng)歷了巨大的變化。 考點二關(guān)系代詞that和which的區(qū)別類別說明只用that不用which的情況先行詞是everything，anything，nothing，few，little，all，none等不定代詞或被all，little，few，much，any，every，no，some等修飾時先行詞被序數(shù)詞、形容詞最高級修飾或先行詞本身就是序數(shù)詞、形容詞最高級時先行詞被the very，the only，the same, the last等修飾時 當主句中的先行詞是疑問詞who或which時 先行詞既有人也有物時只用which不用that的情況非限制性定語從句中 關(guān)系代詞前有介詞時 先行詞是that或those時There seems to be nothing that seems impossible for him in the world．對他來說世界上好像沒有不可能的事。This is the factory(which/that)we visited last year．這就是我們?nèi)ツ陞⒂^的那家工廠。m going to send postcards．我有很多朋友，我打算寄明信片給他們。Is this the reason why(＝for which)he refused our offer?這就是他拒絕我們幫助他的理由嗎？特別提示： whose指人或物，作定語。I still remember the day when I first came to this school．我還記得我第一次來這所學校的那天。It39。ll never forget the time during which I spent my childhood in the country．我永遠不會忘記孩童時代我在鄉(xiāng)村度過的時光。2．which引導定語從句代指前面整句話內(nèi)容時，意為“這，這一點”。5．“the same．．．that．．．”表同一個人或物，而“the same．．．a(chǎn)s．．．”表同種類的東西。試比較：It must be the way(that/in which) you write that leads to your ugly handwriting．一定是你寫字的方式導致了你難看的書寫。clock．(when引導時間狀語從句)定語從句與狀語從句when，where和why在引導定語從句時可以用“介詞＋which”的結(jié)構(gòu)來替換，在引導狀語從句時則不行 This is the school where(＝in which)I once worked．(where引導定語從句)Put back the book where it was．(where引導狀語從句)定語從句中的關(guān)系代詞在從句中充當某種句子成分，因此去掉之后從句成分不完整；而狀語從句中的連接詞在從句中不作任何成分，去掉后從句的成分仍然完整　　It is such an interesting book as we all like．(as引導定語從句，作動詞like的賓語)It is such an interesting book that we all like it．(that引導結(jié)果狀語從句，不充當從句的成分)定語從句與同位語從句定語從句在復合句中相當于形容詞，對先行詞起修飾或限制的作用，與先行詞之間有從屬關(guān)系。但還要注意看定語從句是否缺主語、賓語或表語，如果不缺這三種句子成分，則不用as。達標檢測 Ⅰ．單句語法填空1．(2020句意：羅文博士的秘書兩周前辭職了，他現(xiàn)在只能自己打字。故填which。句意：它們被他們的主人訓練地很好，它們的主人在照顧這些動物方面很有經(jīng)驗。北京卷)The students benefiting most from college are those __who__ are totally engaged(參與)in academic life．解析：考查定語從句。9．(201911．(201914．(全國Ⅰ)But my connection with pandas goes back to my days on a TV show in the mid1980s, __when__ I was the first Western TV