1--I saw her this morning.
2--He told me the news reported till yesterday.(他告诉我的这则新闻一直报道到昨天为止)
2--He told me the news yesterday.(他昨天才告诉我这则新闻)
这题看它的主要意思是想表达什么了.
3--We talked in English for two hours.(我们用英语交谈了2小时;这里的for是持续的意思)