高二英语必修5同步表达.doc

高中英语必修5同步表达Unit 1【写作提示】从前，一位科学家观察羽毛和石头下落，得出结论：重物体比轻物体下落快。多年后，另一位科学家发现那个理论不正确。他做了很多实验来验证那个理论。最后提出了著名的物体下落理论 如果没有空气阻力，重物体和轻物体同时落地。【所用知识】observe falling, draw a conclusion, find the theory untrue, do many experiments to test, put forward the famous theory of falling object, unless the air holds them back, fall to the ground at the same time【成句组文】 Once a scientist observed a feather and a stone falling and drew a conclusion that heavy objects fell faster light objects. However, many years later, another scientist found the theory untrue, so he made many experiments to test it. Finally he put forward the famous theory of falling object heavy objects and light objects fall to the ground at the time unless the air holds them back