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师梦圆初中英语教材同步人教版九年级全一册Section A 2a—2d下载详情
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【自主梳理】1. Turn to Page 97 and finish 1a .

2. Turn to page 99 , read the passage and finish exercises on Pa ge 99.

3. Check answers.

【重点领悟】

Studying useful words and expressions.

① co st v价钱为,花费 n.价钱,代价;花费,费用

The cost of a loaf of bread has increased five-fold.. 一条面包的价钱增长了4倍。

Badges are also available at a cost of £2.50. 徽章也有卖的,2.5英镑一枚。

It's going to cost me over $100,000 to buy new trucks.

买几辆新卡车将花掉我10万多美元。

② harmful adj.对…有害的 ;能造成损害的;不利;不良

Smoking is harmful to our health.

吸烟对人类的健康有害。

③ used to do过去一向,过去时常,过去曾(而现在不再)做

Who used to do your laundry? 谁过去一直为你洗衣服?

She used to wash dishes in a restaurant.她曾经在餐馆 里洗过盘子。

④ afford vt.买得起;担负得起;提供;给予

We couldn't afford to buy a new car. 我们买不起新的车。

We can't afford to wait. 我们等不起。

My parents can't even afford a new refrigerator.

我父母甚至买不起一台新冰箱。

⑤ play a part in扮演某角色; 与…有关,对…有影响

I'd like to play a part in their discussion. 我愿意参与他们的讨论。

Educ ation is playin g a big part in environmental protection.

教育在环境保护中起着很大作用。

He played a part in his favorite TV show.

他在他最喜欢的电视节目中扮演了一个角色。

【探究提升】

① cost

表花费时, 主语为_____.

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