New Words：

due [dju:] adj. 由于；因为；到期；应有；应得的

Sample Sentences：

The next train is due in five minutes.
His success is entirely due to hard work.
That money is due to me, but I haven't got it yet.
Have they been paid the money that is due to them?

New Words：

youth [ju:θ] n. 青春；年轻；年轻人；小伙子

Sample Sentences：

His mistake was due to youth and inexperience.
There was a group of youths standing on the street corner.
The youth of today has greater opportunities than ever before.

due [dju:] adj. 由于；因为

New Words：

reasonable ['ri:znəbl] adj.合理的；通情达理的
explanation [.eksplə'neiʃən] n. 解释；说明

Sample Sentences：

My mother was always reasonable.
He gave me a reasonable explanation.
His explanation sounds reasonable to me.
How do you decide what you need and how much is reasonable to pay for it?

New Words：

cancel ['kænsl]
v.取消, 作废, 注销, 抵消, 删除
n.取消, 删除

Sample Sentences：

The match had to be cancelled because of bad weather.
There was a notice on the board saying the class had been cancelled.
If the worst comes to the worst, we'll have to cancel our holiday plans.

New Words：

unfortunate /ʌnˈfɔːrtʃənət/ adj. 不幸的；倒霉的；令人遗憾的；可惜的
unfortunately /ʌnˈfɔːrtʃənətli/ adv. 不幸地；遗憾地；可惜地；不巧

Sample Sentences：

I was unfortunate to lose my keys.
He was unfortunate to lose in the final round.

Unfortunately, we had to cancel the soccer game.
Unfortunately, I hurt my knee when I fell down on the ice.

cancel ['kænsl]
v.取消, 作废, 注销, 抵消, 删除
n.取消, 删除