We have bought a new computer.变被动语态：A new computer have been bought.
举一反三
- 将句子 I bought a new bike just now. (用just改写) 变成为 I have just bought a new bike.
- Should I _____ a new computer? A: bought B: buy C: to buy D: buying
- I have bought the new dress since last month.
- What the new competitors have done to compete against MontaVista（） A: They have employed new masters. B: They have combined together. C: They have bought modern technology.
- This is a _______ computer, which we just bought for our research.