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    精英家教网 > 初中英语 > 题目详情
    17．We _____ about 1，600English words since we began to learn the language．（　　）
    A．learnB．learnedC．will learnD．have learned

    分析 自从我开始学习这门语言以来，我已经学了大约1600个英语单词．

    解答 答案：D
    根据since we began to learn the language，可知应该用现在完成时态．since we began to learn the language是现在完成时的标志词．现在完成时态表示过去发生或已经完成的动作对现在造成的影响或结果．或从过去已经开始，持续到现在的动作或状态．本题属于从过去已经开始，持续到现在的动作或状态，现在完成时态的构成：助动词have/has+过去分词，故选：D．

    点评 本题主要考查动词时态，做此类题目要注意时间状语、标志词．根据上下文所表达的含义，做出判断．同时更应记清时态的构成形式．就本题而言，主要考查现在完成时态．

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