一、 教学目标：

1、 理解课文大意，识记课文内的新单词和词组。

tell sb about sth such a tall building

go walking most of us

by underground be close to

have to do air pollution

want help with one's homework at night

2、 难点：

通过听、略读等练习提高阅读技巧。

二、 预习导学：

1.There's less air pollution in Sunshine Town than in other areas of Beijing.

less...than.... "比....少.... " 其反意短语为：more...than...

less是little 的比较级，more是much 或many的比较级，than是比较级的标志词。

There's less water in my glass than that in yours. 我杯子里面的水比你的少。

I have more comic books than you. 我的漫画书比你的多。

2. Most of us live in tall buildings.

Most of .... .....中的大多数

Most of the students are Young Pioneers.

试译：我们中的大多数乘坐公共汽车上学。

____________________________________________________.

3. Here is such a tall building. 这里就有这样的一幢高楼。

such +a/an+形容词+可数名词单数 "一个如此....的...."

(记住冠词紧跟在such后)

He is such a smart boy. 他是一个如此神气的男孩。

试译：如此美丽的一朵花_____________________

4. We like it because we are close to our friends.

Be close to... 与....关系好;离......近

你能区别一下句子中的close分别是什么意思吗?

The shop closes at half past nine every evening.

The shops are all closed.

Amy and I are close friends.

I work in my hometown because I want to be close to my parents.

5. We do not have to go far if we want help with our homework.

have to.. "不得不..." 强调因客观条件的制约而不得不去做某事。(情态动词)

否定: don't have to=needn't "不必...;没有必要"

与must不同：must通常是指主观认识到应该去做某事。"必需;应该"

有两种否定形式："不应该，不能"mustn't(相当于can't或shouldn't);

"不必" needn't(相当于don't have to)

请尝试用must, have to, needn't, mustn't来把下列句子补充完整：

_________ I finish my homework now? No, you ____________.

Tonight I don't ___________ do my homework because I finished it at school.

You __________ cross the road when the light is red.

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