It's been three years since his father died.
His father has been dead for 3 years.
His father passed away 3 years ago.
It's been three years since his father passed away.
It has been three years since his father left this world.
1.希望你能借我一些书.（用三种不同婉转程度的句子表达）
I was hoping that you could lend me some books
I was hoping to borrow some books from you
Can I borrow some books/
May I please borrow some books.
2.瞧!乌云满天,就要下雨了.（将来时间表达）
Look! The sky's all dark, it's about to rain.
3.委员们定于下星期四开会来解决这一问题.（将来时间表达）
The committee members scheduled a meeting for next thursday to solve this problem.