The Causes of Inter-lingual Errors and WORLD Intra-lingual Errors Inter-lingual Ewrors(语际错误) (1)When the learners begin to study L2,they mdy. extend their L!knowledge and skills to the study of the target language.They may also apply their experiences accumulated from L1 acquisition to the study of L2. E.9.1.我打狗 2.I beat (the)dog. (2)When L1 habits hinder the learners from learning L2 habits,then negative inter-lingual errors arises. One of the common errors among Chinese learners of English is the misuse of the singular form for the plural form of nouns. E.g.1.我有三本书。 2.I have three book.The Causes of Inter-lingual Errors and Intra-lingual Errors • Inter-lingual Errors（语际错误） (1) When the learners begin to study L2, they may extend their L1 knowledge and skills to the study of the target language. They may also apply their experiences accumulated from L1 acquisition to the study of L2. • E.g. 1. 我打狗。 2. I beat (the) dog. (2) When L1 habits hinder the learners from learning L2 habits, then negative inter-lingual errors arises. One of the common errors among Chinese learners of English is the misuse of the singular form for the plural form of nouns. • E.g. 1. 我有三本书。 2. I have three book