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课件网) 人教版(2019)必修第二册英语高中 Unit2 Wildlife Protection Discovering useful structures Report an ongoing event 1. Underline the present continuous passive voice in the sentences and discuss its function. The workers are building the house. the workers. The house is being built by 主语 谓语 宾语 The workers are building the house 宾语 主语 谓语变被动 Wise men learn by other men's mistakes; fools by their own Let’s look at the pictures and answer: What happened to the animals 【Practice】 Human beings kill wild animals. Wild animals by human beings. are killed Wise men learn by other men's mistakes; fools by their own The passage is about Liu Tao’s concern of the wetland in his hometown In the wetland of my hometown, there are many different kinds of animals, including wild birds, fish, snakes, insects and so on. When I was in primary school, I often went there with my friends to watch the birds and study them. That was an interesting place for all of us. But things have begun to change in recent years. Wise men learn by other men's mistakes; fools by their own What is happening to the small birds in the wetland What is happening to the wild ducks What is happening to the fish and snakes Question & Answer Liu Tao’s concern about wetlands in his hometown. Small birds _____ (catch) with nets. are being caught Wild ducks _____ (sell) at food markets. are being sold Fish and snakes _____ (kill) for food in restaurants. are being killed Wise men learn by other men's mistakes; fools by their own African elephants are being hunted. What is being done to help them Besides, human beings are cutting down trees for house building. Trees by human beings for house building. are being cut down At present, human race are destroying the environment. At present, the environment by human race. is being destroyed What happened to the forest Wise men learn by other men's mistakes; fools by their own Nowadays, some factories are polluting the river. Nowadays, the river by some factories. As a result, animals are losing their habitats. is being polluted What happened to the sea Wise men learn by other men's mistakes; fools by their own Find more sentences with the same verb form in this unit. Our planet’s wildlife is dying out at an alarming rate. Between 150 and 200 species are becoming extinct every day. Much is being done to protect wildlife. Wise men learn by other men's mistakes; fools by their own What measures are being taken to help them Wise men learn by other men's mistakes; fools by their own 形式 结构 肯定式 主语＋am/is/are＋being done. 否定式 主语＋am/is/are not＋being done. 一般疑问式 am/is/are＋主语＋being done？ 特殊疑问式 疑问词＋am/is/are＋主语+being done？ 现在进行时被动语态的基本形式 Wise men learn by other men's mistakes; fools by their own eg： The house is being painted. （肯定式） The trees are not being watered. （否定式） Am I being watched over （一般疑问式） How many bridges ... ...
