v-ing1 做主语以及宾语.ppt

The Verb –ing form(1) 15. The microscope is used for __ minute objects. examining B. being examined C. examined D. examine 16. Mike has got used ___ up late at night. A. to sit B. sit C. to sitting D. sitting A C 17. Once the heart stops _____, death follows at once. beating B. to beat C. being beaten D. to be beating 18. We are now busy _____ for the exam. A. to prepare B. preparing C. prepared D. being prepared A B 19. I remembered ____ this person somewhere before. A. seeing B. having been seen C. seen D. to see 20. I regret ____ that to her. She must be crying now. A. having said B. to have said C. to say D. said A A 21. The patient must be separated to avoid ____ others. A. being infected B. infecting C. to infect D. infected 22. Your clothes need ______. A. washed B. to be washed C. to wash D. being washed B B 23. _____ provides us with essential nutrients (营养), while ______ provides us with oxygen. A. To eat; breathing B. Eating; to breathe C. Eating; breathing D. Eaten; breathed C 24. He attended the party without ___. A. invited B. inviting C. having invited D. being invited 25. By ____, water can be changed into gas. A. heating B. being heated C. having heated D. heated D B 26. On land many objects prevent sound