A. Talk time
A. 对话时间
Talking about obligations
谈谈义务
What should /must we do to help giant pandas?
我们应该/必须做些什么来帮助大熊猫？
We shouldn't /mustn't buy fur products.
我们不应该/不要买皮草制品。
We should /must protect their homes.
我们应当/必须保护它们的家园。
Read the conversation below and practice it in pairs. Pay attention to the words in blue.
阅读下面的对话并结对练习，注意蓝色的词语。
Kevin: What should we do to protect the fish in the river?
Kevin：我们应该做些什么来保护河里的鱼？
Amy: We mustn't throw rubbish into the river. The fish will die if the river is polluted.
Amy：我们不能乱扔垃圾到河里，如果河水被污染了鱼儿就会死了。
Kevin: What else should we do?
Kevin：我们还应该做些什么？
Amy: We should write to factories and ask them to stop polluting the river.
Amy：我们应该写信给工厂，并要求他们停止污染河流。
Kevin: Good idea.
Kevin：好主意。