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6．-Did you visit the famous cultural relics last month？
-No，we____ it，but we spent too much time shopping．（　　）

	A．	could have visited		B．	must have visited
	C．	can't have visited		D．	shouldn't have visited

分析 ---上個月你們參觀那個有名的文化遺址了嗎？---沒有，我們本來可以去的，但是我們在購物上花了太多的時間．

解答答案：A
答語表達的意思是：如果我們不在購物上花太多的時間，我們本來是可以去參觀那個有名的文化遺址的；此處表達了與過去事實相反的情況，相當一個虛擬條件句，即：If we hadn't spent too much time shopping，we could have visited it；A．could have visited 本來可以去參觀；B．must have visited 表示對過去發生的事比較肯定的推測；"一定是參觀了"，用在此處不合句意；C．D是否定的表達，因此也不合句意；故選A

點評本題考查了情態動詞在虛擬語氣中的運用．做此類題時，首先要根據句意分析判斷該句是否是虛擬語氣句，然后確定是對過去，現在還是將來的虛擬，從而選擇相應的表達方式．

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