Whatmakesachildspeakalanguagehaslongbeenapuzzletolinguists(语言学家)
61speaking,therearetwoschoolsoflinguists,bothof62trytoexplain63achildpicksupalanguagesoeasily
Thefactthatachildpicksupalanguage64issurprising:atoneyearold,achildisableto65"bye-bye";attwo,heisabletousefiftywords;bythreehebeginsto66tenses
ThefamousAmericanlinguistNoamChomsky67thathumanbeingshaveasortofbuilt-insystemforlanguageuse,andthatthe68isonlysecondary
Childrenarenottaughtlanguage69theyaretaughtarithmetic
Otherlinguists,70,holdtheviewthatachildlearns71ofhislanguagefromthehintsintheenvironment
72,theoristsofbothschools73thatthereisabiologicalbasisforlanguageandlanguageuse
The74iswhichismoreimportant,theinnerabilityortheenvironment
Thisiscertainlyafield75tobeexplored
Researchersfrombothschoolsarebusyfindingevidenceto76theiro