对。。。。有很大帮助用英语怎么说

对。。。。有很大帮助
be very helpful to sb

他是个盲人, 触觉地图对他出行有很大帮助。
He is a blind man. The brail map is very helpful to him when he travels

do great help to~~~
eg:Your words do great help to me.
你的话对我帮助很大

it is much helpful to ...

be of great help to
do great help to~~~
be very helpful to

be of great help to