can not think out any good advice to give her._定语修饰advice__
I am thirsty.Can I have something to drink?_作定语修饰something__
Let's go to buy some food._ 目的状语___
They decided to go on a trip to the Great Wall during the summer vacation._作宾语___
Why don‘ t you get togerther to discuss this question?_目的状语___