How can you get to su hai's house?
这里的how是疑问副词，表示方式，意思是如何。
英语中的疑问句的构成如下：
一、一般疑问句，把第一个助动词、情态动词或be动词放在主语的前面，如果主语前面无助动词，可以加助动词do、does、did，这种语序称为部分倒装语序。
Does he come from New England?
Is she beautiful?
二、特殊疑问句，把特殊疑问词放在句首，后面仍然用部分倒装语序。
Where are you from?
Who is the tall boy?
Whose keys are these?
When do you hear the news?
How wide did they make the kitchen?
The capital of which country is Tokyo?
What does she have for breakfast?
Why is he absent?
希望我能帮助你解疑释惑。
温馨提示：答案为网友推荐，仅供参考