Question

my brother ran very fast改为一般疑问句

Answer 1

my brother ran very fast改为一般疑问句
Did your brother run very fast？
改法
1．将陈述句变为一般疑问句时，如句中有be 动词（am/ is/ are）时，可直接将它们提至主语前。
如主语为第一人称，应将其改为第二人称。如：
I'm in Class 2Grade 1． →Are you in Class 2Grade 1﹖
We're watching TV． →Are you watching TV﹖
2．陈述句中有情态动词（can、may、must …）时，也可直接将它们提至主语前，即可成为一般疑问句。如：
He can swim now． →Can he swim now﹖
The children may come with us． → May the children come with us﹖
3．陈述句中只有一个实义动词作谓语且其时态为一般现在时，变为一般疑问句时要在句首加do或does主语后的实义动词用原形。如：
I like these animals． →Do you like these animals﹖
She wants to go to the movies． → Does she want to go to the movies﹖