他警告我们如果他不在家不要给陌生人开门 英语翻译

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He warn us not to open the door for the strangers when he is not at home.
He warns us of not opening the door for strangers if he is out
或者
He warns us that we should not open the door for strangers if he is out
He warned us not to open the door for the strangers if he wasn't at home.
He warned us against opening the door for the strangers if he wasn't at home.
He warned us not to open for the strangers if he wasn't at home.
翻译如下，希望能帮到你
He warned us don't open the door to strangers if he is not at home.