Unit8 It must belong to Carla. Section B:1a—1dHave you ever seen an alien? Look at these two aliens. How strange they are!【课前预习】1.知识目标：1)词汇：alien (n.) 外星人 suit (n.)西服；套装 v.适合 mystery (n.) 奥秘；神秘事物2）句子：A: Why do you think the man is running?B: He could be running for exercise.A: No, he’s wearing a suit. He might be running to catch a bus to work.Now the mystery is solved.He might be late for work.We now know what was happening in the neighborhood.2.技能目标: 学习掌握情态动词must, might, could 表推测时的用法。3.情感目标： 通过在听力中对奇怪现象的推测，培养学生树立科学 的世界观。While listening 1. Look at the pictures and use the words from the box to write sentences. land man UFO run alien run afterPicture1: A UFO is landing.(不明飞行物正在着陆)Picture2:The alien is chasing the man.(外星人正在追赶那个人。）Picture3: The man is running.(那个人正在奔跑。）观察与思考：这三个句子是现在进行时，结构“主语+is/are/am +v.ing， 表示事情正在进行。 land两个词性:n.陆地;国家;地产;土地。Vi. 登岸;降临。Not all land is good for people. 并非所有陆地都适宜人们居住。The plane landed last night.飞机昨晚降落的。chase vt.追捕;追求;追寻;镂刻 n.追捕;打猎;猎物（指鸟兽等）;槽 vi.追逐，追赶;追寻;追求（与after连用)。如：Don’t chase after the kid, because he is very afraid.. |
