Ⅱ.Ask them to change the sentences into passive voice, paying attention to the structure of the sentences.
Active Voice
Passive Voice
① The students have collected two thousand old batteries in the past three months.
② The garden workers have already finished 80% of the rebuilding of the temple.
③ He has sent the old TV set to his neighbour.
④ China has sent up scores of man-made satellites into space.
⑤ Mr Smith has returned the dictionary and magazines to the library.
① Two thousand old batteries have been collected (by the students) in the past three months.
② 80% of the rebuilding of the temple has been finished (by the garden workers).
③ The old TV set has been sent to his neighbour.
④ Scores of man-made satellites have been sent into space (by China).
⑤ The dictionary and magazines have been returned to the library (by Mr Smith).
Ⅲ. Pair work Ask pairs of Ss to discuss and find out the differences between the above two columns, then the teacher gives some explanation if necessary.
Step three Practice
1. Ask the Ss to find the sentences in the passage which include the Present Perfect Tense and then change them into the Active Voice.
2. Drills Ask Ss to finish exercises on page 47 and 48, asking some questions about the two news stories.
① What is the first news story about?
② Why are some of the cultural sites not well protected?
③ What has happened to some ancient sites?
④ What are the villagers worried about?
⑤ What have they decided to do?
⑥ What is the second news story about?
⑦ What will be the result of the repair project?
⑧ What are the people of Beijing asked to do? And what’s the result?
⑨ When was the old city wall built?
⑩ Why do you think the city of Beijing plans to repair the old city wall?
Step four Summarise and Homework
1.Summarise what’s been studied, esp. word-formation and structure of the Present Perfect Tense.
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