ReadingTeaching objectives:1. to learn some information about plants exploring in the 18th-19th century. 2. to teach the students about the main idea about the passage.3. to make the students understand the purpose of the writing the passage. Teaching focus and difficulties:1. knowing the structure of the passage.2. mastering the main events in different times.Teaching methods:1. Listening, reading and thinking to get students to understand the text.2. Pair discussion and group discussion to get students to participate in the classroom activities.Teaching aids:The multimediaTeaching procedures:Step 1 Lead-in (warming up and pre-reading)Show some pictures to arouse the students interest in plants.Do you know anything about plants?Are you familiar with these given pictures?Step 2 SkimmingStudents are expected to read the passage quickly to get the main idea of each paragraph.Step 3 ScanningStudents are expected to scan the passage and finish the T or F questions.Besides that, finish the form.Step 5 Detailed readingAnalyse the structure of the passage.Ask students to divide the passage into several parts and get the main idea of each part.Step 6.ImaginationGive the students a certain situation to imagine the possible reasons of taking the plant home.Homework:Read the passage out.Finish off the exercises in the workbook.