1.such修飾名詞；so修飾形容詞或副詞；
2.本句中such修飾名詞progress,但允許such和progress之間有形容詞,形容詞是修飾progress,such不修飾后面的名詞；如：He is such a clever boy that his teacher likes him very much.
3.在such.that ...和so ...that.句型中,如果so或such放在句首,要用倒裝句,故答案4正確.
4.請注意以下正確句子和不正確句子：
正確句子：He is such a clever boy that his teacher likes him.
Such a clever boy is he that his teacher likes him.
Peter made such rapid progress that his coach couldn't help praising him.
Such rapid progress did he make that his coach couldn't help praising him.
He was so excited that he couldn't get to sleep.
So excited was he that he couldn't get to sleep.
Light travels so fast that we can't imagine its speed.
So fast does light travel that we can't imagine its speed.
不正確的句子：He is so a clever boy that his teacher likes him.
So a clever boy is he that his teacher likes him.
Peter made so rapid progress that his coach couldn't help praising him.
So rapid progress did he make that his coach couldn't help praising him.
So rapid progress did he made that his coach couldn't help praising him.
可記住公式：such+a+adj.+可數(shù)名詞單數(shù)+that.
such+adj.+不可數(shù)名詞單數(shù)/名詞復(fù)數(shù)+that.
so+形容詞/副詞+that.
so+形容詞+（a）+名詞+that.