现在完成时转换成一般过去时
时间：2016-11-18 04:22:38
（单词翻译:单击）
现在完成时可以转化成一般过去时，还可以转化成“It is/has been +时间段+since2从句(用一般过去时)”等句型。
e1.g. Jim has been back for a month. 吉姆已经回来一个月了。 = Jim
came3 back a month ago. 吉姆一个月前就回来了
= It is/has been a month since Jim came back. 自吉姆回来已经有一个月了。 = A month has passed since Jim came back. I have kept the book for two days. = I
borrowed4 the book two days ago.
= It is / has been two days since I borrowed the book. = Two days has passed since I borrowed the book.
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Error Warning!
出错了
Error page: /mobile/?aid=384500&mid=3
Error infos: Got error 28 from storage engine
Error sql: select `l`.`tag`,`l`.`index`,`l`.`level_id`,`b`.`id`,`b`.`word`,`b`.`spell`,`b`.`explain`,`b`.`sentence`,`b`.`src` from `new_wordtaglist` `l` left join `new_word_base` `b` on `l`.`tag`=`b`.`word` where `l`.`arc_id`='384500' and `l`.`level_id`>='' group by `b`.`word` order by `l`.`index` asc
