（1）、The boys are playing soccer on the playground now. (改为否定句) The boys soccer on the playground now.
（2）、The new cell phone cost me 3,000 yuan. （就划线部分提问） did the new cell phone cost you?
（3）、"Can I borrow your bike?”Tom asked me.(改写句子，句意不变) Tom asked me I could lend my bike to ．
（4）、In order to get better grades, we must make a plan. (改写句子，句意不变) If we want to in our study, we must make a plan.
（5）、Though there are many difficulties, we will never give up until we find out what happened to the sunk ship of Korea.(改写句子，句意不变) Though there are many difficulties, we will never give up if the truth of the sunk ship of Korea out.
