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oing being done 完成式 having done having been done Ved (done) 完成式 done 時態(tài)(與謂語動詞)語態(tài)(與主語或所修飾詞) 主語 賓語 賓補 表語 定語 狀語 不定式 動名詞 現(xiàn)在分詞 過去分詞 Mary that there39。s someone _______for her at the door. A. waiting B. waited C. waits D. to wait , in the corner, sat three girls,_______. A. sew B. were sewing C. to sew D. sewing you know when