You should speak as more English as you can (more改成much,因为as..as中间必须加形容词或副词的原级)
Daniel is the taller than any other student in his class (the去掉)
He is the fattest one in us three (in改成of,us和there是同位语,没错)
His voice sounds well and he sings well too (well 改成good,sound是系动词,其后加形容词)