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語,又可做從句的賓語,可以省略關(guān)系代詞,所以應(yīng)選D。而句2中, 主、謂、賓俱全,從句部分為句子的狀語表地點,既可用副詞where,又因 in the museum詞組,可用介詞in + which 引導(dǎo)地點狀語。而此題中,介詞on 用的不對,所以選A。關(guān)系詞的選擇依據(jù)在從句中所做的成分,先行詞在從句中做主、定、賓語時,選擇關(guān)系代詞(who, whom, that, which, whose); 先行詞在從句中做狀語時,應(yīng)選擇關(guān)系副詞(where 地點狀語,when 時間狀語,why 原因狀語)。限制性和非限制性定語從句1)定語從句有限制性和非限制性兩種。限制性定語從句是先行詞不可缺少的部分,去掉它主句意思往往不明確;非限制性定語從句是先行詞的附加說明,去掉了也不會影響主句的意思,它與主句之間通常用逗號分開,例如:This is the house which we bought last 。(限制性)The house, which we bought last month, is very ,是我們上個月買的。(非限制性)2)當(dāng)先行詞是專有名詞或物主代詞和指示代詞所修飾時,其后的定語從句通常是非限制性的,例如:Charles Smith, who was my former teacher, retired last 史密斯去年退休了,他曾經(jīng)是我的老師。My house, which I bought last year, has got a lovely 。This novel, which I have read three times, is very ,我已經(jīng)讀了三遍。3)非限制性定語從句還能將整個主句作為先行詞, 對其進行修飾, 這時從句謂語動詞要用第三人稱單數(shù),例如:He seems not to have grasped what I meant, which greatly upsets ,這使我心煩。Liquid water changes to vapor, which is called ,這就叫做蒸發(fā)。說明:關(guān)系代詞that和關(guān)系副詞why不能引導(dǎo)非限制性定語從句。 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 Why互換。This is the house where(in which)I lived two years you remember the day on which you joined our club? Do you remember the day when you joined our club? 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 )介詞后不能用。(指物用which,指人用whom)We depend on the land from which we get our depend on the land that/which we get our food )句首有指示代詞that,為了不重復(fù)不用that而用其他詞。Tha