没有it is +表语 to be +表语的这种句子.但是可以是to be+名词
比如：当医生蛮不错的.
可以译成：it is great to be a doctor.
如果你想表达“人长得漂亮蛮好的.”
也只会译成it is great to be a beautiful girl.
而不会有it is great to be beautiful.这种句子,很别扭不是吗~