问：I have lunch at twelve o’clock 划线部分提问（at twelve o’clock ）划线部分.
问：bai jie likes history very much（变一般疑问句）
问：I have lunch at twelve o’clock 划线部分提问（at twelve o’clock ）括号里是划线部分.
subject,his,i,favorite,physical,education,think,is 连词成句