句型转换。 1. We learn English by watching English-language videos . (就画线部分提问) you learn English? 2. Have you ever read the novels by Mark Twain? (作否定回答) No, I . 3. I have been learning English for six years . (就画线部分提问) you learning English? 4. I don't know how I can spell new words. (改为简单句) I don't know new words. 5. Why don't you keep an English notebook? (改为同义句) Why an English notebook?