妳來喚醒Immanual Kant was so regular in his habits that until the day he died people were able to set their watches by his actions.伊迈努尔·康德的习惯那么有规律，以至直到他死以前人们都能按他的行动来对表。
When Abraham Lincoln became President of the United States of America,he was completely involved in the problem of slavery.当亚伯拉罕·林肯成为美国总统时，他便陷入到奴隶问题的漩涡中去了。
B?由when,while,as引起的进行时，若主句表示的动作比从句表示的动作更引人注目，主句用过去时(或现在时)，从句用过去进行时(或现在进行时)。若两个动作同样注目，可以都使用进行时。例如：
As I was walking along Main Street,a car mounted the pavement and
crashedsintosa shop.当我正沿着大街走时，一辆汽车越过人行道，冲进一家店铺里去了。
