完成时语法问题she has changed a lot since the last time i saw her-she looks much older.为什么用has changed不用had changed.

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完成时语法问题she has changed a lot since the last time i saw her-she looks much older.为什么用has changed不用had changed. once she has made up her mind ,nothing can chang her为什么这里要用完成时? 是完成时还是过去时what has she accomplished?what degrees has she gotten?what awards has she rcceived?when did she receive them?以上提问是不是只有最后一个问题用过去时而其他的用完成时? 请教一个完成时语法问题Setup was completed successfully.Setup has completed successfully.上面的句子同样是完成时,用was和has意思有什么区别, she has enjoyed herself every time that she has gone to the zoo为啥俩都是完成时? 英语的完成时和一般过去-她到现在还没有来-but she promised-but she had promised为什么不用完成时呢?-but she has promised has she got had her lunch语法对吗 what has she got回答问题是什么 现在完成进行时She has been helping me in the past days.用过去式过去完成进行时She had been helping me in the past days. 怎么想他一样使用完成时和完成进行时?I've lived here for 10 years and she has been living hereI've lived here for 10 years and she has been living here for 12 years. She has been married to Mr Zhang.是被动语态还是系表结构?语法书说系表结构一般只用于一般现在时和一般过去时,被被动语态可用于包括完成时在内等各种时态.此句过去分词是married是表被动还是相 She has been married to Mr Zhang.是被动语态还是系表结构?语法书说系表结构一般只用于一般现在时和一般过去时,被被动语态可用于包括完成时在内等各种时态.此句过去分词是married是表被动还是相 过去式的时间状语能不能用于完成时?she has emptied the basket this morning.这句话对吗? I have a pen.You have a pen.She (He) has a pen.这些句子属于完成时吗? She has swum since half an hour ago.不是说ago不能用在完成时吗? 一个英语的完成时问题there has a tree 和 there has been a tree 两者有什么区别?还有顺便跟我说说完成时什么时候要用has been done什么时候直接has done 现在完成进行时的详细语法 完成时具体的语法知识