句型转换。 |
1. He ought to help his friend work out the problem. (改为否定句) _______________________________________________________ 2. Tom ought to go to join the party. (改为一般疑问句) _______________________________________________________ 3. Must we stay at home? (作否定回答) _______________________________________________________ 4. Our computer needs reparing. (改为同义句) _______________________________________________________ |