题目内容
2.Four years has pass since we came to junior(初级的) high school.把pass改为passed.分析 我们来这个初级中学已经四年了.
解答 答案:把pass改为passed.由句中has和标志词since可知主句应为现在完成时.构成为:has/have+过去分词;句中pass应用它的过去分词passed.
点评 本题考查现在完成时的用法.句子结构为:have或has+过去分词.不能用原形.
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