Do I like jelly?
谓语是实义动词的陈述句转换为一般疑问句:
在句首请助动词Do/Does/Did帮忙,剩下的照抄不变。
I like red. → Do you like red?
He wants to play soccer with friends. → Does he want to play soccer with friends?
We finished our homework before nine yesterday. → Did you finish your homework before nine yesterday?