题目内容：

the government has to take the responsibility for the old people's care
for the old people's care 在句子作什么成分
经常有句子i t is important for people to do sth,for people 做什么成分

优质解答

作定语修饰responsibility
句子It is important for people to do sth,这是用it充当形式主语,不定式to do sth是真正的主语,放在句末,for引出不定式的逻辑上的主语（因为不定式是非谓语动词,不能有语法意义上的主语）.