we need to learn how to be polite when we make requests 求主谓宾的成分 句子的成分?

问题描述:

we need to learn how to be polite when we make requests 求主谓宾的成分 句子的成分?

主we 谓need 宾learn

主we 谓need 宾learn````

主语:we
need to:是情态动词词组,表示做某事的心态,不是真正的谓语.
真正的谓语是:learn
后面的“ how to be polite when we make requests”是个宾语从句,做learn的宾语.