（1）A simplified form of the English language based on 850 key words was developed in the late 1920s by the English psychologist Charles Kay Ogden and
1 publicized
by the English educator I. A. Richards. Known as Basic English, it was used mainly to teach English to non-English-speaking persons and
2 promoted
as an international language. The complexities of English spelling and grammar, however, were major
3 obstacles
to the adoption of Basic English as a second language.
The fundamental princip ...