通过例句看,很明白：
In the end (最后,终于）,I met him.
At the end of last year(在去年末）,I 【met】 him twice.（和一般过去时连用）
By the end of last year(到去年末）,I 【had met】 him twice.（和过去完成时连用）
By the time he arrives(到他回来的时候）,I 【will have finished】 my work（和将来完成时连用）
请在客户端右上角评价点“满意”即可,