问题
句型转换
按要求转换下列句式。
1. Lucy usually cleans the cage every two days. (对画线部分提问)
_____ _____ _____ Lucy usually clean the cage?
2. Jack's grandfather doesn't know how he should use a computer. (改为简单句)
Jack's grandfather doesn't know how _____ _____ a computer.
答案
1. How often does
2. to use