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, 也可以是句子的一部分或代替整個(gè)句子; which從句 不能放句首 。 2. as 一般代替整個(gè)句子 , 從句 則可以放句首 , 句中或句尾 , 表示“正如” ,“或像 … 一樣” 。 例如: as is known, as everyone knows ,as is said, as often happens, as you can see, as it is……。 當(dāng)先行詞前有 as, so, such, the same 修飾時(shí) ,關(guān)系代詞常用 as。 1). a. I saw some trees, and the leaves of _______ were black with disease. b. I saw some trees, the leaves of ______ were black with disease. 2). a. The professor is a little man, on the nose of ______there is a pair of glasses b. The professor is a little man, and on the nose of ______there is a pair of glasses 解題點(diǎn)撥 : 是否有 連詞 是區(qū)分定語(yǔ)從句和并列句的關(guān)鍵。 them whom which him 四 .易混句型 2. 定語(yǔ)從句與狀語(yǔ)從句 1). a. This is such a big stone ____no one can lift it. b. This is such a big stone ____no one can lift. 2). a. Please put the letter in the drawer _____ _________he can easily find it. b. Please put the letter_________he can easily find it. 解題點(diǎn)撥 :(1) 狀語(yǔ)從句中 的 that 是連詞,在從句中不充當(dāng)任何成分,而 定語(yǔ)從句中 的 as在從句中要作一個(gè)成分(主語(yǔ),賓語(yǔ)或表語(yǔ))。 (2)句 which引導(dǎo)的是定語(yǔ)從句修飾 名詞 drawer,而where引導(dǎo)的是地點(diǎn)狀語(yǔ)修飾 動(dòng)詞 put。 that as /in which where where 3. 定語(yǔ)從句與名詞性從句 1) a. He did all (that) he could to help me . 2) a. All that can be done has been done. 3) a. ___is known to us all, the earth turns round the sun. b. It is known to us all _____Taiwan belongs to China. c. _______is known to us all is that the earth is smaller than the sun. b. He did what he could to help me. b. What can be done has been done. As that What 4. 定語(yǔ)從句與同位語(yǔ)從句 1). a. The news ________our volleyball team won the match made us excited. b. The news __________he told me yesterday is exciting. 2). a. I made a promise ______ if anyone set me free, I would make him very rich. b. The mother made a promise ___________ pleased all her children. that (that/which) that/which that 解題點(diǎn)撥: that引導(dǎo)的定語(yǔ)從句是對(duì)其先