基本上由believe， consider， declare， expect， feel ， report， say， see， suppose， think， understand等组成。例如：
It is said that 据说
It is reported that 据报道
It is believed that 大家相信
It is hoped that 大家希望
It is well known that 众所周知
It is thought that 大家认为
It is suggested that 据建议
It is taken granted that 被视为当然
It has been decided that 大家决定
It must be remember that 务必记住的是
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