判断下列句子中不定式在句子中的成分.作目的状语or作后置定语or作宾语I can not think out any good advice to give her.___I am thirsty.Can I have something to drink?___Let's go to buy some foog.____They decided to go on a trip to the Great Wall during the summer vacation.____Why dont't you get togerther to discuss this question?____

I can not think out any good advice to give her 是动词不定式做目的状语
I am thirsty .Can I have something to drink是动词不定式做后置定语
Let's go to buy some food.做目的状语
They decided to go on a trip to the Great Wall during the summer vacation . to go on a trip 做宾语。 to the Great Wall做后置定语
Why don't you get together to discuss this question?做目的状语

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___