三、目标语言: 1. Manatees are gentle. 海牛很温顺。 2. I like pandas best because they are so cute. 我最喜欢熊猫了,因为它们太可爱了。 3. I agree / disagree with you. 我同意/不同意你的意见。 4. I think that …我认为… 5. I believe that …我相信… 6. I feel that …我觉得… 7. We’re trying to save the manatees. 我们正在尽力挽救海牛。(现在进行时) 8. Manatees eat about 100 pounds of food a day. 海牛每天要吃100磅左右的食物。(一般现在时) 9. There used to be a lot of manatees. 过去有许多海牛。(used to 一般过去时) 10. In 1972, it was discovered that they were endangered. 1972年发现海牛濒临灭绝。(被动语态) 11. Some of the swamps have become polluted. 一些沼泽地已经受到污染。(现在完成时)