The Americans and the British

not only speak the same language but also share

not only speak the same language but also share

a large number of social customs.（not only…but also…）
美國(guó)人和英國(guó)人不但說(shuō)相同的語(yǔ)言，而且有很多相同的社會(huì)風(fēng)俗。