【各位大虾好,请教三道关于英语语言学的问题（Englishlinguistics)1.WhichofthefollowingtwosentencesisstructurallymorecomplesWhichdoyouthinkismoredifficultforyounglearnerstolearnSentenceA:Johnsingswell.Sentence】

　　各位大虾好,请教三道关于英语语言学的问题（Englishlinguistics)

　　1.WhichofthefollowingtwosentencesisstructurallymorecomplesWhichdoyouthinkismoredifficultforyounglearnerstolearn

　　SentenceA:Johnsingswell.

　　SentencesB:Johnissinging

　　2.Thefolloingtwosentenceswereproducedbychildrenofdifferentages.Whichwouldyouexpectfromtheolderchild

　　1)Inothurthim.2)Notthesunshining.

　　3.判断正误：Thetermusedtodescribetheprocesswherebyachildusesonewordlikeballtorefertoanapple,anegg,agrapeandballisoverextension.