Unit 10 AirLead-inNew wordsair空气everywhere处处；到处alive活着的factory工厂smoke烟dirty脏的clean干净的；洁净的fresh清新的plant种植Listen and say It keeps them high in the sky.It has no colour or shape. It has no smell or taste. We cannot see it, but we can feel it. It is everywhere. It is important to all people. It is also important to animals and plants. We all need it to keep us alive. Look at the Kite and the balloon. Look at the plane and the bird. They all need it too. It keeps them high in the sky.What is it?Ask and answer the questions.What is it, Jill?…Does it have any colour or taste?…Can you see or feel it ?…Why is it important?…What is it, Jill?It’s air. Does it have any colour or taste?No, it doesn’t. Can you see or feel it ?We cannot see it, but we can feel it.Why is it important?Because we all need it to keep us alive.Language pointskeep 使……保持某种 ( 状态、位置或动作等 )这时要在 keep 的宾语后面接补足语，构成复合宾语。其中宾语补足语通常由形容词、副词、介词短语、现在分词和过去分词等充当。例句：我们应保持教室清洁。 We should keep our classroom clean.1. It keeps them high in the sky. 它使它们在天空中保持得高高的。（ 1 ）用作动词， 意思是“保存；保留；保持；保守”。 例句：这本书我可以保留几天？ How long can I keep this book?拓展： keep 的其他用法（ 2 ）用作动词， 意思是“遵守；维护”。 例句：我们必须遵守校规。 We must keep the school rules.（ 3 ）用作动词， 意思是“记（日记、帐等）”。 例句：她坚持每天记日记。 She keeps a diary every day.（ 4 ）用作连系动词，构成系表结构： keep ＋表语，意为 “ 保持，继续（处于某种状态）”，其中表语可以 是形容词、副词、介词短语等。 例句：课堂上请保持安静。 Please keep silent in class.（ 1 ） no 在本句中用作形容词，可直接放在名词的前面。（ 2 ） no 还可以作副词，是 yes 的反义词，用在回答问 题...
