英语口语自学教材，一片通美语初级口语单词1200个，第236课。请重复跟读。首先：可看着例句的文字跟读。 最后：不看例句的文字亦可顺畅地完成跟读

math

[名　词] 数学. (= mathematics)

She is not good at math.

她对数学不行.

Math is used all the time.

数学经常会被用到.

mathematics

[名　词] 数学.

Mathematics is her strong point.

数学是她的强项 (专长).

People started using mathematics from early on.

人们从很早以前就开始运用数学.

pizza

[名　词] 义大利肉馅饼, 比萨.

We went for a pizza together at lunch time.

我们在午餐时一起去吃比萨.

A pizza usually has cheese on it.

比萨的上面通常有起司.

police

[名　词] 警察, 治安, 公安.

Police are needed to keep us safe.

我们需要警察 (公安) 来维护治安.

[动　词] 维持 … 的治安, 守卫, 保卫, 监督.

He was sent to police her.

他被派去监督她.

polite

[形容词] 有礼貌的, 殷勤的, 文雅的, 上流的.

It's not polite to talk with your mouth full.

嘴裡塞满了食物讲话是不礼貌的.

You should be polite to others.

你应该要对人有礼貌.