New Words：

piece [piːs] 片;块;段;标准的量;
a piece of 一张；一片；一件；一块

Sample Sentences：

I cut them all a piece of birthday cake.
I cut a piece of birthday cake for them all.
Give me a piece of paper, please.
He wrote his name down on a piece of paper.

New Words：

design [dɪˈzaɪn] v&n .设计
stage [steɪdʒ] 舞台；时期，阶段，状态

Sample Sentences：

The product is at the design stage.
This is one of our most popular designs.
I can't explain how much I love this design, it's my favourite one!

popular [ˈpɒpjələ(r)] adj. 受喜爱的;受欢迎的; 流行的

New Words：

be able to [ˈeɪbl] 能够;可以;有能力;
cover [ˈkʌvər] v. 遮盖;覆盖;掩蔽

Sample Sentences：

He was able to help design and build the house.
He may be able to leave hospital early next week.

Snow covered the ground.
She covered her face with her hands.
She covered the food with a piece of cloth.

design [dɪˈzaɪn] 设计

New Words：

sour [ˈsaʊər] adj. 酸的;有酸味的
yell [jel] v. 叫喊;大喊;吼叫

Sample Sentences：

These kinds of apples are sour.
I don't like grapes, they're sour.

Please don't yell at me.
I'm sorry I yelled at you last night.

New Words：

anyway [ˈeniweɪ] 反正;无论如何;不管怎样
time 次数
once [wʌns] 一次
twice [twaɪs] 两次;两遍

Sample Sentences：

I don't want to get up. It's too late now, anyway.
I don't think we'll make it, but let's try anyway.

He cleans his car once a week.
I go swimming twice a week.
We go there maybe once or twice a month.

I brush my teeth three times a day.
The last time I saw him was in May.
Every time I hear that song I feel happy.