1. By the time/end of +過去時間點, 主句（過去完成時）

”截止。。。。。。為止”

By the time/end +從句（一般過去），主句(過去完成時)

“當。。。。。。的時候”

e.g. By the time/end of last year, Sun Yang had won three gold medals.

By the end/time I went out, the bus had left.

2. By the time/end of +將來時間點，主句（將來完成時）

“截止。。。。。。”

By the end of next month, Mo Yan will have written the book.

By the time/end從句 +將來時間點，主句（將來完成時）