[10-20 18:18:21] 来源：http://www.67xuexi.com 高二英语教案 阅读：850次
Period two
Aim:
To make students understand the text.
Plant exploring in the 18th And 19th centuries.
Contents:
Q1 What is each paragraph about?
Q2 Write down the topic of each paragraph in your own words.
Q3 What happened in these years? Complete the sentences on page 33.
Q4 Answer there question in groups.
1) Why was there a lot of plant collecting in the 18th and 19th centuries?
2) How did French missionaries come to be plant collection?
3) What were some of the negative aspects of plant collecting expeditions?
4) Transporting plants over long distances was a big problem, why was this?
5) Why did many plants fail to reach their destinations alive? Can you think of any other reasons?
6) What important the survival rates of plants transported long distances?
Period three
Aim:
To make students master the language points in this text.
Contents:
Phrases:
1 date back to: go back to/date from
eg: This town dates back to the