题目内容
13.By 2010we ______around ten countries in Asia. ( )| A. | have traveled | B. | had traveled | C. | are traveling | D. | travel |
分析 到2010年为止,我们已经游历了亚洲十个国家了.
解答 答案:B 本题考查过去完成时态的用法,A选项用于现在完成时态.B选项用于过去完成时态.C选项用于现在进行时态.D选项用于一般现在时态.根据By 2010"到2010年为止"时间点是过去的过去,应该用过去完成时态,结构式had+done.答案是B.
点评 过去完成时态表示到过去某一时间已经完成的行为或动作,时间点是"过去的过去",结构式had done.要注意与现在完成时态(have/has done)的区别.
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