With explanations and examples.

Though these are entries in the English dictionary, they are listed as pronunciation spellings. Learn more.

Our communication in any language is based on a set of rules called grammar. Standard, correct usage is important to be understood and your level appreciated.

This is Part 2 about the word "focus" and it talks about which preposition is correct to use. See Part 1 to learn how to say focus to be well-understood - not misunderstood!

Verb tense use indicates your proficiency in a language. Learn more about when the simple present is used, and when you should be using other tenses.