机电英语田方Unit4Unit4-2课件教学.pptVIP

Keys: 6. The metal was cutting off from the surface of the workpiece. 7. It is called a machining center. 8. An eye was kept on the milling machine. 9. He was handed an instruction manual. 10. Various turning operations can be perform on an Engine lathe. 馋死 PPT研究院 POWERPOINT ACADEMY * * * 在线教务辅导网： 更多课程配套课件资源请访问在线教务辅导网 Unit Four Machine Tools Task 4 Grammar: Passive Voice 被动语态 Structure: They will broaden their minds. （主动）他们将会拓宽他们的思路。 Their minds will be broadened. （被动）他们的思路将被拓宽。 We fix the headstock at the left hand side of the lathe bed. （主动）我们把主轴承固定在车床床身的左手位置。 The headstock is fixed at the left hand side of the lathe bed. （被动）主轴承被固定在车床床身的左手位置。 The workpiece was clamped in position. 工件被夹在合适的位置上。 The cutter has been located against the setting block. 刀具已经被放置在正对垫块处。 Exercises 1. The grinding machine can’t _____ there. A. be put B. is put C. be putted D. putted 2. Look ! A big modern machining center _____ in our factory. A. is built B. is being built C. has been built D. is building 3. My workpiece _____ tomorrow. A. is cleaned B. be cleaned C. will be cleaned D. is cleaning 4. This sketch _____ long long ago. A. drawn B. is drawn C. was drawn D. was drawing A B C C 5. The parts ______once a week. A. have been cleaned B. is cleaned C. are cleaned D. are cleaning 6. The cutter ______ to the repair shop at once. A. must send B. be must sent C. must be sent D. be sent 7. Our workshop must _____clean every day. A. keep B. to keep C. be kept D. to be kept 8. ---What a nice NC machining center! ---Yeah. It____ Germany. A. made in B. is made in C. is made of D. made of C C C B 9. He _____ to recite the poem in the open air just now. A. heard B. was hearing C. was heard D. has heard 10. As soon as he heard the noise, he went out to see what_____