20. _________ in the fields on a March afternoon，he could feel the warmth of spring．

　　A．To walk　 　　　　　　　　B．Walking

　　C．Walked　　　　　　　　　　D．Having walked

B.


解析:

walk的邏輯主語(yǔ)是he。分詞做狀語(yǔ)時(shí)，分詞的邏輯主語(yǔ)必須與句子的主語(yǔ)保持一致，必須和句中主語(yǔ)含有邏輯上的主謂或動(dòng)賓關(guān)系�，F(xiàn)在分詞做狀語(yǔ)時(shí)，現(xiàn)在分詞的動(dòng)作就是句子主語(yǔ)的動(dòng)作，它們之間的關(guān)系是主動(dòng)關(guān)系；過(guò)去分詞做狀語(yǔ)時(shí)，過(guò)去分詞表示的動(dòng)作是句子主語(yǔ)承受的動(dòng)作，它們之間的關(guān)系是被動(dòng)關(guān)系。

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