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前可帶when, while, if, though, as if, unless等連詞一起作狀語,以便使句子的意思更清楚、更連貫。例如: When paring different cultures, we often pay attention only to the differences without noticing the many similarities. Though tired, he still continued reading. 3. 現(xiàn)在分詞和過去分詞作狀語時的用法比較。 不管是現(xiàn)在分詞還是過去分詞單獨作狀語,其邏輯主語必須與主句的主語一致。分詞作狀語通??赊D(zhuǎn)換成一個相應(yīng)的狀語從句或并列句,如果狀語分句或并列句中的謂語動詞為被動結(jié)構(gòu),就用過去分詞。如果狀語分句或并列句中的謂語動詞為主動結(jié)構(gòu),就用現(xiàn)在分詞。例如: When pared with the size of the whole earth , the biggest ocean does not seem bi