Vocabulary
Grammar
Games
Tests
English grade 6
English grade 7
English grade 8
English grade 9
English grade 10
English grade 11
English grade 12
Basic Grammar Test
National High School Exam
English A1
English B1
Toeic Test Part 1
Toeic Test Part 2
Toeic Test Part 3
Toeic Test Part 4
Toeic Test Part 5
Toeic Test Part 6
Toeic Test Part 7
Short Form Toeic Test (100 questions)
Full Form Toeic Test (200 questions)
IELTS listening practice test
IELTS speaking practice test
IELTS reading practice test
IELTS writing practice test
English video
Bilingual music video
Listening through bilingual music videos
Learn through videos VOA
Learn English through videos VOA
Learn through videos BBC
Learn English through videos BBC
Learn through videos CNN
Learn English through videos CNN
Study with famous people
Learn English with famous people
Tiếng Việt
English
Login
Change background color
Login
Change background color
Tiếng Việt
English
Vocabulary
Grammar
Games
Tests
News
Practice speaking
Practice listening
Listen to music
Quotations
Video Song
English video
Jokes
Traslate
Contact
News
Some useful English topics
Practice speaking
Practice speaking English by topic
Practice listening
Practice listening to English
Listen to music
Listening to English through songs
Quotations
English quotations
Jokes
English jokes
Traslate
Language translation
Contact
Feedback and comments
Definition of
Proto-Indo-European
Proto-Indo-European
noun
Nguyên Ấn-Âu
/ˌprəʊtəʊ ˌɪndəʊ ˌjʊərəˈpiːən/
/ˌprəʊtəʊ ˌɪndəʊ ˌjʊrəˈpiːən/
namespace
Share now
Vocabulary
