Section B Discovering Useful StructuresPart 语言知识讲练with the for the a to to approaching approached to be attended have attended Part 单元语法图解which/that was aimed at bettering the lot of the poorest areas that has been ever written invited interested in readingused excited changed fallen given borrowed from the bank invited to the party written for teaching English given by the musician Developed countries repaired fixed seated carried cheating taken disappointed I found him lying on the grass.No one noticed him knocked down by a car.He usually works in his study with the door locked.
