* Official vs. Native: Many countries have English as an official language but it's not the primary language spoken by the majority of the population. For example, India has English as an official language but Hindi is spoken by a larger number of people.
* Regional Variations: Within a country, different regions may have different primary languages, even if English is official.
* Language Proficiency: Even if English is a first language, people may have different levels of proficiency, making it difficult to classify a country as purely English-speaking.
However, based on the number of countries that consider English as an official language, we can estimate that approximately 60 countries use English as their primary language.
Keep in mind that this number is an approximation and not a precise count.