完成时态，包括将来完成时。
例句：
By the time we arrived the meeting was over.
我们到达时，会议已经结束了。
By the time Flynn arrived at his office it was 5:30.
弗林到达办公室时已经5:30了。 扩展资料
By the time I was 30， we had three adorable children.
到我30岁时，我们有了3个非常可爱的孩子。
By the time the ambulance arrived he was unconscious.
救护车赶到时他已神志不清。
