新编英语教程4 Unit 7.ppt

Contents l???????? Detailed study of Text I II l???????? Oral work: Role-play: telling a story about insects; Interaction activities: a discussion on the psychology of the boy in “A Sunrise on the Veld” l???????? Guided writing: Basic writing techniques—expansion of ideas (2); Composition writing—narration; Letter writing—letter of condolences Text Il???????? Pre-reading activities Group discussion: how much do you know about insects, such as ants, bees, locusts…, their habitats, living habits, food, etc.? Take ants for example Soldier ant, Queen, in the deepest and the most recess of the labyrinth, ferocious, male, fertilize her eggs, worker ants, larvae(newly-born ants), antennae, mandible, a network of passageways, a maze, nest, a column, scurry, writhing blackness, trickle Like human societies, ant communities have their own expertise at the three primary methods of obtaining food: gathering, hunting, and growing. The caste system of ants is believed to have existed for 30 or 40 million years.? ???? In North America, there are several species of ants, each of which have a distinct behavior pattern. These include carpenters, dairymen, soldiers, seed collectors, fungus growers, and even thieves and beggars.? ? The bees eyes, like those of other insects, differ greatly from human eyes. They consist of a pair of compound eyes made up of numerous six-sided facets (28,000 in some dragonflies, 4,000 in house flies) plus three simple eyes. Despite this, their vision is believed to be sharp only for a distance of about 1 m. Bees, however, are capable of seeing ultraviolet light, which is invisible to humans. The bee is capable of navigating, even on a cloudy day, by cloud-penetrating ultraviolet light. Honey bees also use the sun as a reference point to communicate to other bees the angle of flight to be followed to arrive at newly discovered nectar-bearing flowers.?? ? Thus protected, the young remain until the warm