the school needs help to teach music.这一句既然help已经是动词了.为什么要加to.

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• the school needs help to teach music.这一句既然help已经是动词了.为什么要加to.
• the school needs help to teach music.这一句既然help已经是动词了.为什么要加to.
• the school needs help to teach music 为什么teach用不定式
• The school needs help to teach music need为什么加s.The school needs help to teach musicneed为什么加s.