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B. pointing C. points D. to be pointing B。 with+賓語 +Ving形式構(gòu)成 with的復(fù)合結(jié)構(gòu),作狀語,表動作在進(jìn)行。feet是 pointing的邏輯主語。 10. She didn39。t remember ________ him before. A. having met B. have met C. to meet D. to having met A。 fet, regret, remember等后接Ving形式一般式或完成式,表動作已經(jīng)發(fā)生;若接動詞不定式一般式,則表示動作尚未發(fā)生。 11. I must apologize for ________ ahead of time. That39。s all right. A. letting you not know B. not letting you know C. letting you know not D. letting not you know B。 Ving形式的否定式是 not doing...。 12. I can hardly imagine Peter ________ across the Atlantic Ocean in five days. A. sail B. to sail C. sailing D. to have sailed C。 Ving形式的復(fù)合結(jié)構(gòu)是 sb./sb.39。s doing...。 13. I would appreciate ________ back this afternoon. A. you to call B. you call C. your calling D. you39。re calling C。 Ving形式的復(fù)合結(jié)構(gòu)是 sb./sb.39。s doing...。 14. How about two of