题目内容
15．Hehas collected （ collect） 300pictures since 5years ago．分析 自从五年前以来，他已经收藏了300张图片了．
解答 答案：has collected．
根据He--（ collect） 300 pictures since 5years ago．可知自从五年前以来，他已经收藏了300张图片了．句子中since 5years ago表示自从5年前以来，在这里表示一段时间，通常用于现在完成时，构成：have/has+动词的过去分词．故填has collected．
点评 考查单词填空．准确的翻译句意及分析句子结构、时态、固定搭配等是关键，然后再用合适的形式完成句子．
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