"so much so that" 是一種連詞短語，用來表示"如此之多,以至於"。例如: "He was tired, so much so that he couldn't keep his eyes open." (他很累,如此之累以至於他無法睜開眼睛)。"so much so that"通常用來連線兩個句子，後一句話解釋前一句話的程度。例如: "She was nervous, so much so that she couldn't speak." (她很緊張,如此之緊張以至於她說不出話來)。
"so much so that"的語氣十分強烈，意思是 to such an extent or great degree that「……到這種程度以至於……」。結構中的第二個so為代詞，指代前面句子或前面主句中所說的意思。"so much" 是副詞性短語，修飾第二個so指代的意思，強調到這樣的程度以至於……。that 後接一從句，that 有時可以省略。
例如：
Making something by hand has become the exception in many countries today - so much so that giving a homemade gift is sometimes considered extraordinary. 當今用手做東西,在許多國家已經成為特殊——如此地特殊,以致贈送自製禮物有時被認為是不尋常的。
He is rich-so much so that he can buy anything he wants. 他有錢——如此有錢,所以他可以買任何他要的東西。
Tom is clever-so much so that he can solve most of the problems. 湯姆聰明——聰明地可以解決大多數這些問題。