I've heard a great deal about you.

久仰大名。

I'm most grateful to you for taking so much trouble to explain the best way of getting there.

你不厌其烦地给我解释去那里的最佳途径，我对些深表感激。

Whatever nonsense the papers print, some people always believe it.

不管报纸胡说什么都有人信。

78 percent of black high-school graduates are unemployed.

百分之四十八的黑人高中毕业生失业。

He's on leave now.

他现在在休假。

But, my dear niece, please do consider my words very carefully before you decide.

但是我的孩子，在你做出决定之前请一定要认真考虑我的话。