have to 变被动语态He have to deliver the letter by hands.我觉得have to 是实义动词,所以说应该是：The letter is had to deliver by hands.The letter had to be delivered by hands.WHY?类似的还有：We have to cancelled the match.The

have to 变被动语态He have to deliver the letter by hands.我觉得have to 是实义动词,所以说应该是：The letter is had to deliver by hands.The letter had to be delivered by hands.WHY?类似的还有：We have to cancelled the match.The
have to 变被动语态
He have to deliver the letter by hands.
我觉得have to 是实义动词,所以说应该是：The letter is had to deliver by hands.
The letter had to be delivered by hands.WHY?
类似的还有：We have to cancelled the match.The match had to be cancelled.

have to 变被动语态He have to deliver the letter by hands.我觉得have to 是实义动词,所以说应该是：The letter is had to deliver by hands.The letter had to be delivered by hands.WHY?类似的还有：We have to cancelled the match.The
have to 属于具有情态动词特征的一类情态动词,并非实义动词
固定结构一定是：sb./sth have to do .
变为被动也不会出现is,一定是sb/sth have to be done
所以这句话根据以上规则应该变为答案所述,即：The letter had to be delivered by hands.

我比较赞同其中一位（"scarlettwang56"）的回答，被动语态的句式中应该只有一个动词需要更改事态，在网友“向着微光”的回答（“The letter had to be delivered by hands”）中，"have to"和"deliver“都被改成了过去式。由于我也是新手，提出的疑问也不一定正确，还请“向着微光”同学再斟酌一下。或者给我一个解惑，谢谢！...

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我比较赞同其中一位（"scarlettwang56"）的回答，被动语态的句式中应该只有一个动词需要更改事态，在网友“向着微光”的回答（“The letter had to be delivered by hands”）中，"have to"和"deliver“都被改成了过去式。由于我也是新手，提出的疑问也不一定正确，还请“向着微光”同学再斟酌一下。或者给我一个解惑，谢谢！

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have to 的have虽是实意动词，但把含有它的句子变为被动语态时，是不能把它本身变为被动语态的，而是变它后面的谓语动词的。也就是说，无论主动语态或是被动语态，have to 是不会有 be had to 的形式出现的。

The letter is had to deliver by hands.
信被必须亲手递交 (有这么说的吗？）
The letter had to be delivered by hands
信必须被新手递交 （似乎更通些。）
have to在此不是实际动作，类似must, can

have to 是一个情态动词，是没有被动语态的。如：
We can clean the classroom in the morning. 变成被动语态就是：The classroom can be cleaned in the morning. 其中的can 是无法被动的。你所说的上面的句子道理也一样。
The letter has to be delivered by ha...

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have to 是一个情态动词，是没有被动语态的。如：
We can clean the classroom in the morning. 变成被动语态就是：The classroom can be cleaned in the morning. 其中的can 是无法被动的。你所说的上面的句子道理也一样。
The letter has to be delivered by hand.
The match has to be cancelled.

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