New Words：

selfish ['selfiʃ] adj. 自私的
selfishness ['selfiʃnis] n. 自私

Sample Sentences：

You must learn to share and not be so selfish.
You'll have to pay for your selfishness some day.
It was selfish of him to leave all the work to you.

New Words：

greed [gri:d] n. 贪婪；贪欲；贪心；贪吃
greedy ['gri:di] adj. 贪婪的；贪心的；贪吃的；渴望的

Sample Sentences：

He eats because of greed, not hunger.
Nothing would satisfy her greed for power.

She is greedy and selfish.
He is a greedy boy, he ate all our biscuits.
He looked at the shop window with greedy eyes.

selfish ['selfiʃ] adj.自私的

New Words：

mad [mæd] adj.疯狂的；生气的；气愤的； 鲁莽的；神经错乱的
be mad at/with sb 对sb生气
drive sb mad 使发狂；惹…发怒

Sample Sentences：

I know you must be really mad at me.
She was mad with me for coming home late.
That loud music is going to drive me mad.
It was a mad idea to climb the mountain in this bad weather.

New Words：

delivery [di'livəri] n. 交付；传送；递送

Sample Sentences：

We offer customers a free home delivery service.
Please pay for goods on delivery (= when you receive them) .
Let´s place an order for Pizza delivery over the phone, because I feel hungry now.

New Words：

deliver [di'livər] v. 交付；传送；递送；发表；兑现

Sample Sentences：

We'll deliver the goods as soon as we can.
The emperor asked them to deliver pizza to the palace.
The letter was correctly addressed, but delivered to the wrong house.