问题描述：
一个英语并列成分的语法问题
She had told him to come straight in if ever she failed to open the door and to leave the bread on the kitchen table.自学导读里说 leave 和come 为并列成分,这可以理解,因为动作执行者都是him（the baker）,可failed to open the door and to leave,为什么这后一个动词leave前也要加to?
She had told him to come straight in if ever she failed to open the door and to leave the bread on the kitchen table.自学导读里说 leave 和come 为并列成分,这可以理解,因为动作执行者都是him（the baker）,可failed to open the door and to leave,为什么这后一个动词leave前也要加to?
问题解答：
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