why has 和why does ,what had 和what did 的区别举例说明谢谢

2024-08-14 15:43

比如：why has the number of visitors to the village of frinley increased?为什么不用why is或 why does??

1个回答

2024-08-14 19:22

has increased 是现在完成时态。the number of visitors to the village of frinley 是主语这句的意思是：为什么到frinley 村的游客的数量增加了。如果用is...increased 是被动语态，不合题意。如果用does 就更不行，因为increased 是过去分词。当然，这句也可以改成：Why does the number of visitors to the village of Frinley increase?
这些问题搞不懂是因为你对特殊疑问句结构没弄清：特殊疑问词（就是what, how,when,where 等）+一般疑问句。所以why has... 是why + 现在完成时的特殊疑问句Why has he stayed here for such a long time?. why does he often go there? 是一般现在时
what had he done before I arrived 是过去完成时
what did he do? 是一般过去时

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