New Words：

frustrate [frʌs'treit]
v.挫败；使懊丧；使懊恼；使沮丧
adj.无效的；受挫折的；被破坏的；失败了的

Sample Sentences：

The terrible weather frustrated our hopes of going out.
A poor memory frustrated her efforts to become an actress.
We taught and learned together and encouraged each other when we were frustrated.

New Words：

plaid [plæd] adj.方格花的

Sample Sentences：

It matches your plaid skirt perfectly.
Today, I wore a black and white plaid shirt, which is made of cotton.

New Words：

striped [straipt] adj. 有条纹的

Sample Sentences：

Jack's plaid shirt didn't mix well with his striped trousers.
She is wearing a striped T-shirt, blue jeans and purple shoes.

plaid [plæd] adj.方格花的

New Words：

pajamas [pə'dʒɑ:məz] n. （一套）睡衣裤

Sample Sentences：

He was wearing striped pajamas.
He had lost his case and had to borrow Tom's pajamas.
At bedtime, I take off my clothes and put on my pajamas.

striped [straipt] adj. 有条纹的

New Words：

arcade [ɑ:'keid] n. 游乐中心
video arcade （投币式）电子游戏厅
arcade games (在游戏厅玩的)电子游戏；街机游戏；游乐场电玩

Sample Sentences：

The video arcade is a good place to have fun.
I used to play arcade games a lot. Now I don't have much time.