1 答案是so.句子后面有as she is now,so...as...固定搭配,表示像她现在这样的.全句的意思是:我很少见到母亲像现在这样对我的进步如此高兴.
2 也可以用作副词,与形容词或副词连用,用以强调程度,表示“那么的,那样的”.如:
I was that scared that I didn't know what to do.
My hair is not that long.
这句的意思是:我几乎认不出她来了.我从未想过艰苦的劳作可以让一个人变化那么大.
very 不可以.语气不如that那样强.