The meeting was supposed to take place on Tuesday,but we've had to postpone it.but we've had to postpone it.have had to 这与have to 有什么区别?have had to 是have to 是过去完成时形式么?

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ThemeetingwassupposedtotakeplaceonTuesday,butwe''vehadtopostponeit.butwe''vehadtopostponeit.havehadto这

The meeting was supposed to take place on Tuesday,but we've had to postpone it.but we've had to postpone it.have had to 这与have to 有什么区别?have had to 是have to 是过去完成时形式么?
The meeting was supposed to take place on Tuesday,but we've had to postpone it.
but we've had to postpone it.
have had to
这与have to 有什么区别?have had to 是have to 是过去完成时形式么?

The meeting was supposed to take place on Tuesday,but we've had to postpone it.but we've had to postpone it.have had to 这与have to 有什么区别?have had to 是have to 是过去完成时形式么?
没有区别,他们的意思都是一样的,都是不得不的意思,只是一个是现在时,一个是过去时.