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project, no problem, latest, on, discover, astronaut, space travel
2. Key structures: Present perfect with already, just and yet.
教具准备 ppt video
教学过 程
Step 1 Lead-in
1. Word map construction
Show students a video about humans landing on the moon, and ask students to say out the things they see. Help students to answer: astronauts, spacecraft, the moon and so on. Then ask students to work in groups of four. Try to think out more related words like : earth, scientists, stars, space shuttle, sun, planet, universe, space station, air, space and so on.
（设计意图：这个环节的设置目的在于培养学生的自主学习、合作学习与发散思维的能力。学生在观看录像之后，说出已知的单词，并尝试联想相关词汇。学生通过合作探究，自学新的知识，若在反馈中出现错误，老师可适当纠正。这些都为下面的听力环节解决了语言上可能出现的困难。）
2. Ask students to answer some questions about this video.
①. How did the astronauts go to the moon?
②. Have they discovered life on the moon?
③Have the scientists sent spacecrafts to Mars yet?
④. Have they discovered life on Mars yet?
设计意图：帮助学生更深入地了解人类登月的历史。最后的两个问题，很自然的将讨论的话题由登月过渡到火星探索方面，由此引出了接下来的内容，起到承上启下的衔接作用。另外，这些问题的设置很自然的引出堂课的重点句型：Have they …yet? Yes, they have just / already…. No, not yet. / No, they haven’t yet.）通过相关图片巩固操练句型。
Step 2 Listening (Activities 1 , 2)
1. Tell students to listen to a piece of news about the travel mission to Mars and find the answer to the question “Have they discovered life on Mars yet?” and finish Activity 1: Listen and number the words as you hear them.
2. Listen again and finish Activity 2: Check the true sentences.
Step 3 Listening and reading (Activities 3, 4 )
1. Tell students Daming’s friend Tony has made a model of a space station, and now they are talking about the model. Ask students to listen and read the dialogues, then try to answer three questions: ①. Has the spaceship to Mars arrived yet ?
②. Have many astronauts been to the moon yet ?
③. How do the astronauts go back to the earth from the space station?
2. Students read after the tape and then act out the dialogue.
（设计意图：通过这一环节的学习，学生们对火星探索计划的了解更为透彻了。而朗读与表演对话则能使教学内容得到进一步的巩固与提高。）
3. Answer the questions
1)What school project have Daming and Tony got?
2). How does Daming feel about the school project?
3)What news has Tony heard?
4)Has anyone been to Mars?
4. Enjoy the video and repeat the dialogue.
（设计意图：目的在于帮助学生理解课文内容大意，通过模仿视频跟读课文提高学生的语音语调）