I mean that he is being unfair为什么用BE BEING + ADJ的形式? 又不是被动语态它是什么意图?

I mean that he is being unfair为什么用BE BEING + ADJ的形式? 又不是被动语态它是什么意图? What he said is only partly right,I mean,I don't agree with him all.这里的I mean 可以用that is替换么? what i mean is that中that可不可以省略? could be和can be,could possibly和might just1.How old do you think he is?You mean the little boy who sits in that corner?Well,I am not sure.I suppose he (could be )about five years old.请问这里的“可能”用过去时（could）,不用can be —What do you mean ________saying “The boy is overgrowing”?—I mean that he is tall ________—What do you mean ________saying “The boy is overgrowing”?—I mean that he is tall ________ his age.A.as to; for B.by; forC.about; with D.by; to I will smile,does not mean that all is He is too selfish,____ I mean that he cares only for himself.A which B by which为什么选B he who laughs last laughs best.He who hesitate is lost.what is that mean what I mean is A：I ______ her.What ______ (not understand,mean)B：I ______ that she ______ 'Be quiet!'(think,mean) —What do you mean (by)saying “The boy is overgrowing”?—I mean that he is tall （for) his age.后一空为什么不能用to,不能说对于他的年龄来说,“他身材高”吗 Why do you mean ____ saying The body is over growing. I mean that he is tall _____ his age.为什么是by for,不能用about with?Tell me why! i mean that...还是i means that... That is all mean to summer is not ahout love,she is about someone mean to be that one 翻译 I would still like us to be friends.no,i mean that. is that mean 和 does that mean 到底哪个对? prince should have never done that,why is he so mean to her lah!