九年级英语动词不定式问题1.said the best way to learn new words of pop so

九年级英语动词不定式问题
1.said the best way to learn new words of pop songs also helpd a little
2.He thingks studying grammar is a great way to learn a language.
3.said joining the English club at school was the best way to improve her English
问一下,这三个动词不定式在句子中分别做什么语?表语还是定语还是宾语
怎么没人回答啊 。。。。