The school needs help to teach music中,为何要加to?是因为need sth to

The school needs help to teach music中,为何要加to?是因为need sth to the music school help to needs teach The school needs help to teach music need为什么加s. 连词成句 help,music,teach,the,needs,to,school. needs,to,school,teach,music,our,help.连词成句 needs,help.the,school,teach,to,music连词（为什么）谢谢 连词成句：(1)Teach,school,needs,help,the,art,to(.) (2)for,we,scho we need her to help with music 这里为什么加to 英语中什么时候要 Teach sth.to sb. want to do sth ,seem to do sth ,help to do sth,need to do st teach的用法teach sb 是加 doing 还是to do sth? 英语翻译是listen to the music还是listen to music?中间要不要加the?