Holly's best friend is funnier than she is.可以把is 去掉吗,为什么,

Holly's best friend is funnier than she is.可以把is 去掉吗,为什么, Holley‘s best friend is funnier than she is,可以把is去掉吗 ,为什么? Holly's best friend is funnier than she is.she is 是什么东西 在此句中“Holly's best friend is funnier than she is”,为什么She后面要加i 改错:Holly's best friend is quite funnier than she is Holly's best friend is funnier than she is.(同义句） Rose's best friend is funnier than she is Caroline's best friend is funnier than she ( ) He is funnier than I am ,and he 's wilder.为什么可以省略”than I am" he's far more tolerant than she is 这里的is可以去掉吗 改错：I think Mary’s best friend is loveliest than she is. Mary's friend is quieter than she is .请问这句话后面为什么是she is