Unit2 Grammar and usage学案

Teaching aims and demands Teaching aims and demands

* To teach the element of a paragraph

* To put what they learnt into practice

Key points:

* To teach the element of a paragraph

* To put what they learnt into practice

Teaching steps:

一、 Revision

1.agriculture农业 ２.cost of living生活成本（费用）

3. industrialization工业化 4. industrialized工业化的

5.rural农村的 6. urban城市的

7.urbanization城市化的 8.migration pattern迁移模式

9.modernization现代化 10. living standards生活水平

二、The elements of a paragraph

1. Ask students to read the second paragraph of the magazine article in the Reading section and try to find which sentence in the paragraph .Tell students that the sentence which gives the main point of a paragraph or an article is the topic sentence.

2. Ask students to read the second paragraph under the subtitle of 'Bright lights , big city' and identify the topic sentence and supporting sentences in it.

3.Ask students to read both the instructions and Part1 in this section. And choose the right answer.

4.Ask students to read Part 3 to understand what a concluding sentence is ,then get students to read the paragraph in Part B.First add transitions to complete the paragraph, and then point out the topic and concluding sentences.

5.Language points:

1. numb adj 麻木的2.physicist n. 物理学家

3. biologist n. 生物学家 4..botany n. 植物学

5.biochemistry n. 生物化学 6.analytical adj分析的.