Knowledge Base

Glossary

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definitions of grammar terms used in Insights videos and on the Insights website
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Lexical Categories

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an overview of the different parts of speech, and soon: parts of a sentence and sentence types
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Proficiency Levels

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the standards for each Proficiency Level as set by the CEFR
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Standardized Tests

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COMING SOON

an overview of the TOEFL, IELTS, and YLE exams

English Explained

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The English Alphabet is Confusing

While our alphabet has only 26 letters, it has about 40 unique sounds.  There’s a lot of different sound-spelling combinations to remember, which makes spelling and pronunciation difficult for non-native speakers.

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language illuminated

In Favor of the Oxford Comma

The comma which comes between the last two entries of a list is called the Oxford Comma.  Many people omit it, but including this comma may improve communication

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